-
Properties of \($\ensuremath{\gamma}$\)-decaying isomers in the \($^{100}\mathrm{Sn}$\) region populated in fragmentation of a \($^{124}\mathrm{Xe}$\) beam. Häfner, G.; Moschner, K.; Blazhev, A.; Boutachkov, P.; Davies, P. J.; Wadsworth, R.; Ameil, F.; Baba, H.; Bäck, T.; Dewald, M.; Doornenbal, P.; Faestermann, T.; Gengelbach, A.; Gerl, J.; Gernhäuser, R.; Go, S.; Górska, M.; Grawe, H.; Gregor, E.; Hotaka, H.; Isobe, T.; Jenkins, D. G.; Jolie, J.; Jung, H. S.; Kojouharov, I.; Kurz, N.; Lewitowicz, M.; Lorusso, G.; Lozeva, R.; Merchan, E.; Naqvi, F.; Nishibata, H.; Nishimura, D.; Nishimura, S.; Pietralla, N.; Schaffner, H.; Söderström, P.-A.; Steiger, K.; Sumikama, T.; Taprogge, J.; Thöle, P.; Watanbe, H.; Warr, N.; Werner, V.; Xu, Z. Y.; Yagi, A.; Yoshinaga, K.; Zhu, Y. in Phys. Rev. C (2019). 100(2) 024302.
-
Operating the 120{textdegree} Dipol-Magnet at the {CologneAMS} in a gas-filled mode. Altenkirch, R.; Feuerstein, C.; Schiffer, M.; Hackenberg, G.; Heinze, S.; Müller-Gatermann, C.; Dewald, A. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2019). 438 184--188.
-
Pulse-Shape Analysis and position resolution in highly segmented HPGe AGATA detectors. Lewandowski, L.; Reiter, P.; Birkenbach, B.; Bruyneel, B.; Clement, E.; Eberth, J.; Hess, H.; Michelagnoli, C.; Li, H.; Perez-Vidal, R. M.; Zielinska, M. in The European Physical Journal A (2019). 55(5) 81.
The performance of the Pulse-Shape Analysis (PSA) in AGATA HPGe detectors was investigated and improved employing a {\\($}{\backslash}gamma{\$\)}\($\gamma$\)-ray source measurement based on {\\($} e^{\{}+{\}}e^{\{}-{\}}{\$\)}e+e-annihilation radiation after decays of 22Na by {\\($} {\backslash}beta^{\{}+{\}}{\$\)}\($\beta$\)+decay. The first interaction positions of the two 511keV {\\($}{\backslash}gamma{\$\)}\($\gamma$\)rays were determined and the connecting line of these two positions was compared to the known source position as a measure for the PSA performance. The position resolution and its dependence on the PSA parameters were investigated by varying most relevant input quantities: the charge carrier mobility of the holes, the response of the employed measuring electronics especially the preamplifier rise time. The relative statistical weight of charge signals and transient signals was scrutinized. The optimal distance metric of the grid-search algorithm and its impact on the position resolution were determined.
-
High-resolution study of the Gamow-Teller (GT-) strength in the ⁶⁴Zn(³He,t)⁶⁴Ga reaction. Diel, F.; Fujita, Y.; Fujita, H.; Cappuzzello, F.; Ganioğlu, E.; Grewe, E.-W.; Hashimoto, T.; Hatanaka, K.; Honma, M.; Itoh, T.; Jolie, J.; Liu, Bin; Otsuka, T.; Takahisa, K.; Susoy, G.; Rubio, B.; Tamii, A. in Phys. Rev. C (2019). 99(5) 054322.
-
Lifetime of the 15/2⁻₁ state in ¹³⁵Te. Simpson, G; Regis, J M; Bettermann, L; Genevey, J; Jolie, J; Köster, U; Materna, T; Malkiewicz, T; Muraz, J-F; Pinston, J A; Roussiere, B; Thiamova, G in Journal of Physics G: Nuclear and Particle Physics (2019). 46(6) 065108.
The lifetime of the state of 135Te has been measured to be τ = 809(22) ps, corresponding to a reduced transition rate of =6.6(2) W.u. The experiment was performed at the focal point of the Lohengrin spectrometer and μs-delayed γ rays from mass-selected A = 135 ions were detected by four LaBr3(Ce) scintillators. This allowed the fast-timing technique to be used to access lifetimes in the 10s-of-ps to ns time region. The value is typical of a vibrational transition, despite 135Te possessing only one valence neutron and two valence protons. Shell model calculations performed with the state-of-the-art effective interaction predict a B(E2) value close to the experimental one and show that contributions from the π(g 7/2, d 5/2)νf 7/2 couplings are coherent.
-
Decay properties of the 3⁻₁ level in ⁹⁶Mo. Gregor, E T; Arsenyev, N N; Scheck, M; Shneidman, T M; Thürauf, M; Bernards, C; Blanc, A; Chapman, R; Drouet, F; Dzhioev, A A; de France, G; Jentschel, M; Jolie, J; Keatings, J M; Kröll, Th; Köster, U; Leguillon, R; Mashtakov, K R; Mutti, P; O'Donnell, D; Petrache, C M; Simpson, G S; Sinclair, J; Smith, J F; Soldner, T; Spagnoletti, P; Sushkov, A V; Urban, W; Vancraeyenest, A; Vanhoy, J R; Werner, V; Zell, K O; Zielinska, M in Journal of Physics G: Nuclear and Particle Physics (2019). 46(7) 075101.
-
Lifetime measurement of excited states in ⁴⁶Ti. Goldkuhle, A.; Fransen, C.; Dewald, A.; Arnswald, K.; Bast, M.; Beckers, M.; Blazhev, A.; Braunroth, T.; Hackenberg, G.; Häfner, G.; Litzinger, J.; Jolie, J.; Müller-Gatermann, C.; von Spee, F.; Warr, N.; Werner, D.; Zell, K. O. in The European Physical Journal A (2019). 55(4) 53.
The level lifetimes of the yrast 21+, 41+ and 61+ states and an upper limit of the lifetime of the 81+ state in 46Ti have been measured with high accuracy exploiting the recoil distance Doppler-shift method (RDDS) and using {\\($}{\backslash}gamma{\backslash}gamma{\$\)}\($\gamma$\)\($\gamma$\)coincidences. The nuclei were populated by the fusion evaporation reaction 40Ca(9Be, 2p1n)46Ti at a beam energy of {\\($}E=33{\$\)}E=33MeV at the FN tandem accelerator of the University of Cologne, Germany. Lifetimes were extracted using the established differential decay curve method (DDCM).
-
Probing isospin symmetry in the (⁵⁰Fe, ⁵⁰Mn, ⁵⁰Cr) isobaric triplet via electromagnetic transition rates. Giles, M. M.; Nara Singh, B. S.; Barber, L.; Cullen, D. M.; Mallaburn, M. J.; Beckers, M.; Blazhev, A.; Braunroth, T.; Dewald, A.; Fransen, C.; Goldkuhle, A.; Jolie, J.; Mammes, F.; Müller-Gatermann, C.; Wölk, D.; Zell, K. O.; Lenzi, S. M.; Poves, A. in Phys. Rev. C (2019). 99(4) 044317.
-
Shape coexistence in 178Hg. Müller-Gatermann, C.; Dewald, A.; Fransen, C.; Auranen, K.; Badran, H.; Beckers, M.; Blazhev, A.; Braunroth, T.; Cullen, D. M.; Fruet, G.; Goldkuhle, A.; Grahn, T.; Greenlees, P. T.; Herzáifmmode \check{n}else \v{n}\fi{}, A.; Jakobsson, U.; Jenkins, D.; Jolie, J.; Julin, R.; Juutinen, S.; Konki, J.; Leino, M.; Litzinger, J.; Nomura, K.; Pakarinen, J.; Peura, P.; Procter, M. G.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; Scholey, C.; Sorri, J.; Stolze, S.; Taylor, M. J.; Uusitalo, J.; Zell, K. O. in Phys. Rev. C (2019). 99(5) 054325.
-
Improvements in the measurement of small 14CO2 samples at {CologneAMS}. Stolz, A.; Dewald, A.; Heinze, S.; Altenkirch, R.; Hackenberg, G.; Herb, S.; Müller-Gatermann, C.; Schiffer, M.; Zitzer, G.; Wotte, A.; Rethemeyer, J.; Dunai, T. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2019). 439 70--75.
-
On the imprecisions that may be induced when applying the Blaugrund approximation for the analysis of Doppler-shift attenuation lifetime measurements. Petkov, P.; Müller-Gatermann, C. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2019). 915 40 - 46.
It is shown that the Blaugrund approximation could have led to some imprecise lifetime determinations in the past which used the Doppler-shift attenuation method (DSAM). Comparison with Monte Carlo simulations of the slowing-down process show that there is not an easy way to judge using them on the reliability of old data.
-
Identification of high-spin proton configurations in ¹³⁶Ba and ¹³⁷Ba. Kaya, L.; Vogt, A.; Reiter, P.; Müller-Gatermann, C.; Gargano, A.; Coraggio, L.; Itaco, N.; Blazhev, A.; Arnswald, K.; Bazzacco, D.; Birkenbach, B.; Bracco, A.; Bruyneel, B.; Corradi, L.; Crespi, F. C. L.; de Angelis, G.; Droste, M.; Eberth, J.; Farnea, E.; Fioretto, E.; Fransen, C.; Gadea, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hadyńska-Klęk, K.; Hess, H.; Hetzenegger, R.; Hirsch, R.; John, P. R.; Jolie, J.; Jungclaus, A.; Korten, W.; Leoni, S.; Lewandowski, L.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D.; Podolyák, Zs.; Pollarolo, G.; Recchia, F.; Rosiak, D.; Saed-Samii, N.; Şahin, E.; Siciliano, M.; Scarlassara, F.; Seidlitz, M.; Söderström, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, S.; Szpak, B.; Ur, C.; Valiente-Dobón, J. J.; Weinert, M.; Wolf, K.; Zell, K. O. in Phys. Rev. C (2019). 99(1) 014301.
-
The observation of vibrating pear-shapes in radon nuclei. Butler, P. A.; Gaffney, L. P.; Spagnoletti, P.; Konki, J.; Scheck, M.; Smith, J. F.; Abrahams, K.; Bowry, M.; Cederkäll, J.; Chupp, T.; de Angelis, G.; De Witte, H.; Garrett, P. E.; Goldkuhle, A.; Henrich, C.; Illana, A.; Johnston, K.; Joss, D. T.; Keatings, J. M.; Kelly, N. A.; Komorowska, M.; Kröll, T.; Lozano, M.; Nara Singh, B. S.; O’Donnell, D.; Ojala, J.; Page, R. D.; Pedersen, L. G.; Raison, C.; Reiter, P.; Rodriguez, J. A.; Rosiak, D.; Rothe, S.; Shneidman, T. M.; Siebeck, B.; Seidlitz, M.; Sinclair, J.; Stryjczyk, M.; Van Duppen, P.; Vinals, S.; Virtanen, V.; Warr, N.; Wrzosek-Lipska, K.; Zielinska, M. in Nature Communications (2019). 10(1) 2473.
There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we observed the low-lying quantum states in 224Rn and 226Rn by accelerating beams of these radioactive nuclei. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.
-
Escape-suppression shield detector for the MINIBALL γ-ray spectrometer. Rosiak, D.; Seidlitz, M.; Reiter, P.; Eberth, J.; Hess, H.; Hirsch, R.; Steinbach, T.; Warr, N.; Le Galliard, C.; Matea, I.; Nguyen Trung, T.; Gottardo, A. in The European Physical Journal A (2019). 55(4) 48.
A bismuth-germanate (BGO) escape-suppression shield for the high-purity germanium triple-cluster detector of the MINIBALL {\\($} {\backslash}gamma{\$\)}\($\gamma$\)-ray spectrometer was designed and built. Monte Carlo simulations with the simulation code GEANT4 were performed to guide the construction and to determine the detector geometry of the new BGO shield. After the first measurements concerning mechanical properties of the BGO housing and the performance of the photomultiplier tubes at the Institut de Physique Nucl{é}aire, Orsay, the prototype BGO escape-suppression shield was combined with a MINIBALL triple-cluster detector at the Institut f{ü}r Kernphysik, Cologne. A dedicated electronics and digital data-acquisition system was put into operation in order to determine timing properties of the combined coincidence measurement and to measure values for the energy resolution of the BGO detectors, for the BGO low-energy threshold, and for the crucial peak-to-total ratio (P/T). The measured P/T value for a standard 60Co {\\($} {\backslash}gamma{\$\)}\($\gamma$\)-ray source compares well with expectations and will allow to proceed with the amendment of the MINIBALL triple-cluster detectors with an escape-suppression shield for improved in-beam {\\($} {\backslash}gamma{\$\)}\($\gamma$\)-ray spectroscopy especially at the new HIE-ISOLDE accelerator for radioactive ion beams at CERN.
-
Optimization and characterization of the PGAI-NT instrument's Neutron Tomography set-up at MLZ. Kluge, E. J.; Stieghorst, C.; Revay, Zs.; Kudejova, P.; Jolie, J. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2019). 932 1--15.
The Prompt Gamma-ray Activation Imaging and Neutron Tomography (PGAI-NT) instrument at the PGAA facility of the Heinz Maier-Leibnitz Center (MLZ), provides a method to obtain and effectively visualize position-sensitive element abundances in samples by combining a three-dimensional extension of Prompt Gamma-ray Activation Analysis (PGAA) and Neutron Tomography (NT). Inspired by a proof-of-principle study, a cone-beam tomography set-up was designed, tested and installed. This article reports on the design of the new cone-beam tomography set-up and its optimization using neutron beam simulations and physical measurements. A new position-sensitive neutron detector with improved performance and instrument environment integration was designed, built and tested. The overall NT performance of the set-up is investigated in the course of a Quality Assessment for neutron tomography sites. Its stand-alone NT and all-in-one PGAI-NT suitability is determined.
-
A new dedicated plunger device for the GALILEO γ-ray detector array. Müller-Gatermann, C.; von Spee, F.; Goasduff, A.; Bazzacco, D.; Beckers, M.; Braunroth, T.; Boso, A.; Cocconi, P.; de Angelis, G.; Dewald, A.; Fransen, C.; Goldkuhle, A.; Gottardo, A.; Gozzelino, A.; Hadyńska-Klęk, K.; Jawroski, G.; John, P.R.; Jolie, J.; Lenzi, S.M.; Litzinger, J.; Menegazzo, R.; Mengoni, D.; Napoli, D.R.; Recchia, F.; Siciliano, M.; Testov, D.; Thiel, S.; Valiente-Dobón, J.J.; Zell, K.O. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2019). 920 95--99.
-
Lifetimes in ²¹¹At and their implications for the nuclear structure above ²⁰⁸Pb. Karayonchev, V.; Blazhev, A.; Esmaylzadeh, A.; Jolie, J.; Dannhoff, M.; Diel, F.; Dunkel, F.; Fransen, C.; Gerhard, L. M.; Gerst, R.-B.; Knafla, L.; Kornwebel, L.; Müller-Gatermann, C.; Régis, J.-M.; Warr, N.; Zell, K. O.; Stoyanova, M.; Van Isacker, P. in Phys. Rev. C (2019). 99(2) 024326.
-
Evolution of E2 strength in the rare-earth isotopes ¹⁷⁴⁻¹⁷⁶⁻¹⁷⁸⁻¹⁸⁰Hf. Wiederhold, J.; Werner, V.; Kern, R.; Pietralla, N.; Bucurescu, D.; Carroll, R.; Cooper, N.; Daniel, T.; Filipescu, D.; Florea, N.; Gerst, R-B.; Ghita, D.; Gurgi, L.; Jolie, J.; Ilieva, R. S.; Lica, R.; Marginean, N.; Marginean, R.; Mihai, C.; Mitu, I. O.; Naqvi, F.; Nita, C.; Rudigier, M.; Stegemann, S.; Pascu, S.; Regan, P. H. in Phys. Rev. C (2019). 99(2) 024316.
-
Toward the limit of nuclear binding on the N=Z line: Spectroscopy of ⁹⁶Cd. Davies, P. J.; Park, J.; Grawe, H.; Wadsworth, R.; Gernhäuser, R.; Krücken, R.; Nowacki, F.; Ahn, D. S.; Ameil, F.; Baba, H.; Bäck, T.; Blank, B.; Blazhev, A.; Boutachkov, P.; Browne, F.; Čeliković, I.; Dewald, M.; Doornenbal, P.; Faestermann, T.; Fang, Y.; de France, G.; Fukuda, N.; Gengelbach, A.; Gerl, J.; Giovinazzo, J.; Go, S.; Goel, N.; Górska, M.; Gregor, E.; Hotaka, H.; Ilieva, S.; Inabe, N.; Isobe, T.; Jenkins, D. G.; Jolie, J.; Jung, H. S.; Jungclaus, A.; Kameda, D.; Kim, G. D.; Kim, Y.-K.; Kojouharov, I.; Kubo, T.; Kurz, N.; Lewitowicz, M.; Lorusso, G.; Lubos, D.; Maier, L.; Merchan, E.; Moschner, K.; Murai, D.; Naqvi, F.; Nishibata, H.; Nishimura, D.; Nishimura, S.; Nishizuka, I.; Patel, Z.; Pietralla, N.; Rajabali, M. M.; Rice, S.; Sakurai, H.; Schaffner, H.; Shimizu, Y.; Sinclair, L. F.; Söderström, P.-A.; Steiger, K.; Sumikama, T.; Suzuki, H.; Takeda, H.; Taprogge, J.; Thöle, P.; Valder, S.; Wang, Z.; Warr, N.; Watanabe, H.; Werner, V.; Wu, J.; Xu, Z. Y.; Yagi, A.; Yoshinaga, K.; Zhu, Y. in Phys. Rev. C (2019). 99(2) 021302.
-
Collectivity of the 2p-2h proton intruder band of ¹¹⁶Sn. Petrache, C. M.; Régis, J.-M.; Andreoiu, C.; Spieker, M.; Michelagnoli, C.; Garrett, P. E.; Astier, A.; Dupont, E.; Garcia, F.; Guo, S.; Häfner, G.; Jolie, J.; Kandzia, F.; Karayonchev, V.; Kim, Y.-H.; Knafla, L.; Köster, U.; Lv, B. F.; Marginean, N.; Mihai, C.; Mutti, P.; Ortner, K.; Porzio, C.; Prill, S.; Saed-Samii, N.; Urban, W.; Vanhoy, J. R.; Whitmore, K.; Wisniewski, J.; Yates, S. W. in Phys. Rev. C (2019). 99(2) 024303.
-
Low-lying octupole isovector excitation in ¹⁴⁴Nd. Thürauf, M.; Stoyanov, Ch.; Scheck, M.; Jentschel, M.; Bernards, C.; Blanc, A.; Cooper, N.; De France, G.; Gregor, E. T.; Henrich, C.; Hicks, S. F.; Jolie, J.; Kaleja, O.; Köster, U.; Kröll, T.; Leguillon, R.; Mutti, P.; O'Donnell, D.; Petrache, C. M.; Simpson, G. S.; Smith, J. F.; Soldner, T.; Tezgel, M.; Urban, W.; Vanhoy, J.; Werner, M.; Werner, V.; Zell, K. O.; Zerrouki, T. in Phys. Rev. C (2019). 99(1) 011304.
-
Microscopic structure of coexisting 0⁺ states in ⁶⁸Ni probed via two-neutron transfer. Flavigny, F.; Elseviers, J.; Andreyev, A. N.; Bauer, C.; Bildstein, V.; Blazhev, A.; Brown, B. A.; De Witte, H.; Diriken, J.; Fedosseev, V. N.; Franchoo, S.; Gernhäuser, R.; Huyse, M.; Ilieva, S.; Klupp, S.; Kröll, Th.; Lutter, R.; Marsh, B. A.; Mücher, D.; Nowak, K.; Otsuka, T.; Pakarinen, J.; Patronis, N.; Raabe, R.; Recchia, F.; Reiter, P.; Roger, T.; Sambi, S.; Seidlitz, M.; Seliverstov, M. D.; Siebeck, B.; Tsunoda, Y.; Van Duppen, P.; Vermeulen, M.; Von Schmid, M.; Voulot, D.; Warr, N.; Wenander, F.; Wimmer, K. in Phys. Rev. C (2019). 99(5) 054332.
-
Low-lying electromagnetic transition strengths in 180Pt. Müller-Gatermann, C.; Dewald, A.; Fransen, C.; Braunroth, T.; Jolie, J.; Litzinger, J.; Régis, J. M.; von Spee, F.; Warr, N.; Zell, K. O.; Grahn, T.; Greenlees, P. T.; Hauschild, K.; Jakobsson, U.; Julin, R.; Juutinen, S.; Ketelhut, S.; Nieminen, P.; Nyman, M.; Peura, P.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; Scholey, C.; Sorri, J.; Stolze, S.; Uusitalo, J.; Petkov, P. in Phys. Rev. C (2018). 97(2) 024336.
-
β decays of the heaviest N=Z-1 nuclei and proton instability of 97In. Park, J.; Krücken, R.; Lubos, D.; Gernhäuser, R.; Lewitowicz, M.; Nishimura, S.; Ahn, D. S.; Baba, H.; Blank, B.; Blazhev, A.; Boutachkov, P.; Browne, F.; CCfielikovicćfi, I.; de France, G.; Doornenbal, P.; Faestermann, T.; Fang, Y.; Fukuda, N.; Giovinazzo, J.; Goel, N.; Górska, M.; Grawe, H.; Ilieva, S.; Inabe, N.; Isobe, T.; Jungclaus, A.; Kameda, D.; Kim, G. D.; Kim, Y.-K.; Kojouharov, I.; Kubo, T.; Kurz, N.; Lorusso, G.; Moschner, K.; Murai, D.; Nishizuka, I.; Patel, Z.; Rajabali, M. M.; Rice, S.; Sakurai, H.; Schaffner, H.; Shimizu, Y.; Sinclair, L.; Söderström, P.-A.; Steiger, K.; Sumikama, T.; Suzuki, H.; Takeda, H.; Wang, Z.; Watanabe, H.; Wu, J.; Xu, Z. Y. in Phys. Rev. C (2018). 97(5) 051301.
-
Study of isomeric states in 198,200,202,206 Pb and 206 Hg populated in fragmentation reactions. Lalović, N; Rudolph, D; Podolyák, Zs; Sarmiento, L G; Simpson, E C; Alexander, T; Cortés, M L; Gerl, J; Golubev, P; Ameil, F; Arici, T; Bauer, Ch; Bazzacco, D; Bentley, M A; Boutachkov, P; Bowry, M; Fahlander, C; Gadea, A; Gellanki, J; Givechev, A; Goel, N; Górska, M; Gottardo, A; Gregor, E; Guastalla, G; Habermann, T; Hackstein, M; Jungclaus, A; Kojouharov, I; Kumar, R; Kurz, N; Lettmann, M; Lizarazo, C; Louchart, C; Merchán, E; Michelagnoli, C; Moeller, Th; Moschner, K; Patel, Z; Pietralla, N; Pietri, S; Ralet, D; Reese, M; Regan, P H; Reiter, P; Schaffner, H; Singh, P; Stahl, C; Stegmann, R; Stezowski, O; Taprogge, J; Thöle, P; Wendt, A; Wieland, O; Wilson, E; Wood, R; Wollersheim, H-J; Birkenbach, B; Bruyneel, B; Burrows, I; Clément, E; Désesquelles, P; Domingo-Pardo, C; Eberth, J; González, V; Hess, H; Jolie, J; Judson, D S; Menegazzo, R; Mengoni, D; Napoli, D R; Pullia, A; Quintana, B; Rainovski, G; Salsac, M D; Sanchis, E; Simpson, J; Dóbon, J J Valiente; Collaboration, the AGATA in Journal of Physics G: Nuclear and Particle Physics (2018). 45(3) 035105.
Isomeric states in isotopes in the vicinity of doubly-magic 208 Pb were populated following reactions of a relativistic 208 Pb primary beam impinging on a 9 Be fragmentation target. Secondary beams of 198,200,202,206 Pb and 206 Hg were isotopically separated and implanted in a passive stopper positioned in the focal plane of the GSI Fragment Separator. Delayed γ rays were detected with the Advanced Gamma Tracking Array (AGATA). Decay schemes were re-evaluated and interpreted with shell-model calculations. The momentum-dependent population of isomeric states in the two-nucleon hole nuclei 206 Pb/ 206 Hg was found to differ from the population of multi neutron-hole isomeric states in 198,200,202 Pb.
-
Transition probabilities in neutron-rich 80,82Se and the role of the νg9/2 orbital. Litzinger, J.; Blazhev, A.; Dewald, A.; Didierjean, F.; Duchêne, G.; Fransen, C.; Lozeva, R.; Verney, D.; de Angelis, G.; Bazzacco, D.; Birkenbach, B.; Bottoni, S.; Bracco, A.; Braunroth, T.; Cederwall, B.; Corradi, L.; Crespi, F. C. L.; Désesquelles, P.; Eberth, J.; Ellinger, E.; Farnea, E.; Fioretto, E.; Gernhäuser, R.; Goasduff, A.; Görgen, A.; Gottardo, A.; Grebosz, J.; Hackstein, M.; Hess, H.; Ibrahim, F.; Jolie, J.; Jungclaus, A.; Kolos, K.; Korten, W.; Leoni, S.; Lunardi, S.; Maj, A.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatovic, T.; Million, B.; Möller, O.; Modamio, V.; Montagnoli, G.; Montanari, D.; Morales, A. I.; Napoli, D. R.; Niikura, M.; Pietralla, N.; Pollarolo, G.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Rosso, D.; Sahin, E.; Salsac, M. D.; Scarlassara, F.; Söderström, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, S.; Theisen, Ch.; Valiente-Dobón, J. J.; Vandone, V.; Vogt, A. in Phys. Rev. C (2018). 97(4) 044323.
-
A simple procedure for γ-γ lifetime measurements using multi-element fast-timing arrays. Régis, J.-M.; Dannhoff, M.; Jolie, J. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2018). 897 38 - 46.
Abstract The lifetimes of nuclear excited states are important observables in nuclear physics. Their precise measurement is of key importance for developing and testing nuclear models as they are directly linked with the quantum nature of the nuclear system. The γ - γ timing technique represents a direct lifetime determination by means of time-difference measurements between the γ rays which directly feed and decay from a nuclear excited state. Using arrays of very-fast scintillator detectors, picosecond-sensitive time-difference measurements can be performed. We propose to construct a symmetric energy–energy–time cube as is usually done to perform γ - γ coincidence analyses and lifetime determination with high-resolution germanium detectors. By construction, a symmetric mean time-walk characteristics is obtained, that can be precisely determined and used as a single time correction for all the data independently of the detectors. We present the results of timing characteristics measurements of an array with six LaBr 3 (Ce) detectors, as obtained using a 152Eu point γ -ray source. Compared with a single detector pair, the time resolution of the symmetrised time-difference spectra of the array is nearly unaffected.
-
Evolution of deformation in neutron-rich Ba isotopes up to A=150. Lică, R.; Benzoni, G.; Rodríguez, T. R.; Borge, M. J. G.; Fraile, L. M.; Mach, H.; Morales, A. I.; Madurga, M.; Sotty, C. O.; Vedia, V.; De Witte, H.; Benito, J.; Bernard, R. N.; Berry, T.; Bracco, A.; Camera, F.; Ceruti, S.; Charviakova, V.; Cieplicka-Oryńczak, N.; Costache, C.; Crespi, F. C. L.; Creswell, J.; Fernandez-Martínez, G.; Fynbo, H.; Greenlees, P. T.; Homm, I.; Huyse, M.; Jolie, J.; Karayonchev, V.; Köster, U.; Konki, J.; Kröll, T.; Kurcewicz, J.; Kurtukian-Nieto, T.; Lazarus, I.; Lund, M. V.; Mărginean, N.; Mărginean, R.; Mihai, C.; Mihai, R. E.; Negret, A.; Orduz, A.; Patyk, Z.; Pascu, S.; Pucknell, V.; Rahkila, P.; Rapisarda, E.; Regis, J. M.; Robledo, L. M.; Rotaru, F.; Saed-Samii, N.; Sánchez-Tembleque, V.; Stanoiu, M.; Tengblad, O.; Thuerauf, M.; Turturica, A.; Van Duppen, P.; Warr, N. in Phys. Rev. C (2018). 97(2) 024305.
-
High-spin structure in the transitional nucleus 131Xe: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure. Kaya, L.; Vogt, A.; Reiter, P.; Siciliano, M.; Birkenbach, B.; Blazhev, A.; Coraggio, L.; Teruya, E.; Yoshinaga, N.; Higashiyama, K.; Arnswald, K.; Bazzacco, D.; Bracco, A.; Bruyneel, B.; Corradi, L.; Crespi, F. C. L.; de Angelis, G.; Eberth, J.; Farnea, E.; Fioretto, E.; Fransen, C.; Fu, B.; Gadea, A.; Gargano, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hadyńska-Klęk, K.; Hess, H.; Hetzenegger, R.; Hirsch, R.; Itaco, N.; John, P. R.; Jolie, J.; Jungclaus, A.; Korten, W.; Leoni, S.; Lewandowski, L.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Müller-Gatermann, C.; Napoli, D.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Queiser, M.; Recchia, F.; Rosiak, D.; Saed-Samii, N.; Şahin, E.; Scarlassara, F.; Schneiders, D.; Seidlitz, M.; Siebeck, B.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Ur, C.; Valiente-Dobón, J. J.; Wolf, K.; Zell, K. O. in Phys. Rev. C (2018). 98(1) 014309.
-
Lifetime determination in 190,192,194,196Hg via γ-γ fast-timing spectroscopy. Esmaylzadeh, A.; Gerhard, L. M.; Karayonchev, V.; Régis, J.-M.; Jolie, J.; Bast, M.; Blazhev, A.; Braunroth, T.; Dannhoff, M.; Dunkel, F.; Fransen, C.; Häfner, G.; Knafla, L.; Ley, M.; Müller-Gatermann, C.; Schomacker, K.; Warr, N.; Zell, K.-O. in Phys. Rev. C (2018). 98(1) 014313.
-
Structure of even-even cadmium isotopes from the beyond-mean-field interacting boson model. Nomura, K.; Jolie, J. in Phys. Rev. C (2018). 98(2) 024303.
-
Millisecond 23/2+ isomers in the N=79 isotones Xe-133 and Ba-135. Kaya, L.; Vogt, A.; Reiter, P.; Müller-Gatermann, C.; Siciliano, M.; Coraggio, L.; Itaco, N.; Gargano, A.; Arnswald, K.; Bazzacco, D.; Birkenbach, B.; Blazhev, A.; Bracco, A.; Bruyneel, B.; Corradi, L.; Crespi, F. C. L.; de Angelis, G.; Droste, M.; Eberth, J.; Farnea, E.; Fioretto, E.; Fransen, C.; Gadea, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hadyńska-Klęk, K.; Hess, H.; Hetzenegger, R.; Hirsch, R.; John, P. R.; Jolie, J.; Jungclaus, A.; Korten, W.; Leoni, S.; Lewandowski, L.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D.; Podolyák, Zs.; Pollarolo, G.; Recchia, F.; Rosiak, D.; Saed-Samii, N.; Şahin, E.; Scarlassara, F.; Seidlitz, M.; Söderström, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, S.; Szpak, B.; Ur, C.; Valiente-Dobón, J. J.; Weinert, M.; Wolf, K.; Zell, K. O. in Phys. Rev. C (2018). 98(5) 054312.
-
Enhanced Quadrupole and Octupole Strength in Doubly Magic ¹³²Sn. Rosiak, D.; Seidlitz, M.; Reiter, P.; Naïdja, H.; Tsunoda, Y.; Togashi, T.; Nowacki, F.; Otsuka, T.; Colò, G.; Arnswald, K.; Berry, T.; Blazhev, A.; Borge, M. J. G.; Cederkäll, J.; Cox, D. M.; De Witte, H.; Gaffney, L. P.; Henrich, C.; Hirsch, R.; Huyse, M.; Illana, A.; Johnston, K.; Kaya, L.; Kröll, Th.; Benito, M. L. Lozano; Ojala, J.; Pakarinen, J.; Queiser, M.; Rainovski, G.; Rodriguez, J. A.; Siebeck, B.; Siesling, E.; Snäll, J.; Van Duppen, P.; Vogt, A.; von Schmid, M.; Warr, N.; Wenander, F.; Zell, K. O. in Phys. Rev. Lett. (2018). 121(25) 252501.
-
Archaeometry at the PGAA facility of MLZ - Prompt gamma-ray neutron activation analysis and neutron tomography. Kluge, E. J.; Stieghorst, C.; Wagner, F.E.; Gebhard, R.; Revay, Zs.; Jolie, J. in Journal of Archaeological Science: Reports (2018). 20 303--306.
Instrumental neutron techniques such as Prompt Gamma-ray Activation Analysis and Neutron Tomography and their combination, are effective methods to obtain chemical compositions with good detection limits and visualize internal structures within a sample. As non-destructive analysis methods, they are especially suitable for the investigation of cultural heritage objects and are therefore attractive for the field of archaeometry. This article reports on the investigation of two ring-like Celtic burial gifts from the Bavarian region using these methods. In contrast to our initial resumption, the two rings were not made in the same way. Our results clearly show completely different compositions and internal structures.
-
The first (53Mn/55Mn) isotopic ratio measurements at the Cologne {FN}-Tandem Accelerator. Schiffer, M.; Spanier, R.; Müller-Gatermann, C.; Herb, S.; Feuerstein, C.; Hackenberg, G.; Marock, M.; Heinze, S.; Stolz, A.; Dewald, A.; Binnie, S. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2018). 437 87--92.
-
Spins and electromagnetic moments of ¹⁰¹⁻¹⁰⁹Cd. Yordanov, D. T.; Balabanski, D. L.; Bissell, M. L.; Blaum, K.; Blazhev, A.; Budinčević, I.; Frömmgen, N.; Geppert, Ch.; Grawe, H.; Hammen, M.; Kreim, K.; Neugart, R.; Neyens, G.; Nörtershäuser, W. in Phys. Rev. C (2018). 98(1) 011303.
-
Shell-model-based deformation analysis of light cadmium isotopes. Schmidt, T.; Heyde, K. L. G.; Blazhev, A.; Jolie, J. in Phys. Rev. C (2017). 96(1) 014302.
-
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd. Davies, P.J.; Grawe, H.; Moschner, K.; Blazhev, A.; Wadsworth, R.; Boutachkov, P.; Ameil, F.; Yagi, A.; Baba, H.; Bäck, T.; Dewald, M.; Doornenbal, P.; Faestermann, T.; Gengelbach, A.; Gerl, J.; Gernhäeuser, R.; Go, S.; Górska, M.; Gregor, E.; Isobe, T.; Jenkins, D.G.; Hotaka, H.; Jolie, J.; Kojouharov, I.; Kurz, N.; Lewitowicz, M.; Lorusso, G.; Maier, L.; Merchan, E.; Naqvi, F.; Nishibata, H.; Nishimura, D.; Nishimura, S.; Nowacki, F.; Pietralla, N.; Schaffner, H.; Söderström, P.-A.; Jung, H.S.; Steiger, K.; Sumikama, T.; Taprogge, J.; Thöle, P.; Warr, N.; Watanabe, H.; Werner, V.; Xu, Z.Y.; Yoshinaga, K.; Zhu, Y. in Physics Letters B (2017). 767 474 - 479.
Abstract The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.
-
Lifetimes and electromagnetic transition strengths in ¹⁵⁷Dy. Gladnishki, K. A.; Petkov, P.; Möller, O.; Dewald, A.; Jolie, J.; Tonev, D.; Trichkova, M.; Heinze, S.; von Brentano, P.; Bazzacco, D.; Ur, C. A.; Farnea, E.; Axiotis, M.; Lunardi, S.; de Angelis, G.; Napoli, D. R.; Marginean, N.; Martinez, T.; Caprio, M. A.; Rainovski, G. in Phys. Rev. C (2017). 96(2) 024324.
-
On the quadrupole collectivity in the yrast band of ¹⁶⁸Yb. Petkov, P.; Dewald, A.; Möller, O.; Deloncle, I.; Chapman, R.; Pascu, S.; Bucurescu, D.; Tonev, D.; Reese, M.; Fransen, C.; Araddad, S.Y.; Asova, G.; Copnell, J.; Goutev, N.; Hackstein, M.; Jolie, J.; Lisle, J.C.; Mo, J.N.; Pissulla, Th.; Rother, W.; Smith, A.G.; Tenereiro, C.; Thompson, D.M.; Zell, K.O. in Nuclear Physics A (2017). 957 240 - 258.
-
Enhanced collectivity along the N=Z line: Lifetime measurements in 44Ti, 48Cr, and 52Fe. Arnswald, K.; Braunroth, T.; Seidlitz, M.; Coraggio, L.; Reiter, P.; Birkenbach, B.; Blazhev, A.; Dewald, A.; Fransen, C.; Fu, B.; Gargano, A.; Hess, H.; Hirsch, R.; Itaco, N.; Lenzi, S.M.; Lewandowski, L.; Litzinger, J.; Müller-Gatermann, C.; Queiser, M.; Rosiak, D.; Schneiders, D.; Siebeck, B.; Steinbach, T.; Vogt, A.; Wolf, K.; Zell, K.O. in Physics Letters B (2017). 772 599 - 606.
Abstract Lifetimes of the 21+ states in 44Ti, 48,50Cr, and 52Fe were determined with high accuracy exploiting the recoil distance Doppler-shift method. The reduced E2 transition strengths of 44Ti and 52Fe differ considerably from previously known values. A systematic increase in collectivity is found for the N=Z nuclei compared to neighboring isotopes. The B(E2) values along the Ti, Cr, and Fe isotopic chains are compared to shell-model calculations employing established interactions for the 0f1p shell, as well as a novel effective shell-model Hamiltonian starting from a realistic nucleon–nucleon potential. The theoretical approaches underestimate the B(E2) values for the lower-mass Ti isotopes. Strong indication is found for particle-hole cross-shell configurations, recently corroborated by similar results for the neighboring isotone 42Ca.
-
Low collectivity of the 2+1 state of 212Po. Kocheva, D.; Rainovski, G.; Jolie, J.; Pietralla, N.; Blazhev, A.; Altenkirch, R.; Ansari, S.; Astier, A.; Bast, M.; Beckers, M.; Braunroth, Th.; Cappellazzo, M.; Dewald, A.; Diel, F.; Djongolov, M.; Fransen, C.; Gladnishki, K.; Goldkuhle, A.; Hennig, A.; Karayonchev, V.; Keatings, J. M.; Kluge, E.; Kröll, Th.; Litzinger, J.; Moschner, K.; Müller-Gatermann, C.; Petkov, P.; Scheck, M.; Scholz, Ph.; Schmidt, T.; Spagnoletti, P.; Stahl, C.; Stegmann, R.; Stolz, A.; Vogt, A.; Warr, N.; Werner, V.; Wölk, D.; Zamora, J. C.; Zell, K. O.; Ponomarev, V. Yu.; Van Isacker, P. in Phys. Rev. C (2017). 96(4) 044305.
-
On the quadrupole collectivity in the yrast band of 168Yb. Petkov, P.; Dewald, A.; Möller, O.; Deloncle, I.; Chapman, R.; Pascu, S.; Bucurescu, D.; Tonev, D.; Reese, M.; Fransen, C.; Araddad, S.Y.; Asova, G.; Copnell, J.; Goutev, N.; Hackstein, M.; Jolie, J.; Lisle, J.C.; Mo, J.N.; Pissulla, Th.; Rother, W.; Smith, A.G.; Tenereiro, C.; Thompson, D.M.; Zell, K.O. in Nuclear Physics A (2017). 957 240 - 258.
Abstract The lifetimes of eight lower spin levels of the yrast band in 168Yb, populated via the 154Sm(18O,4n) and 124Sn(48Ca,4n) reactions, were measured, six of them for the first time, by means of the recoil-distance Doppler-shift method. Two versions of the differential decay-curve method have been applied for the data analysis resulting in a very good agreement. The reduced transition probabilities indicate some reduction of the collectivity for states just above the 61+ level, i.e. well below the band-crossing. The reasons of this effect are discussed in terms of an interaction between the ground-state band and yet unknown part of the two-quasiparticle (ν13/2) spin-aligned S-band by invoking the shell-structure or alternatively/additionally, as changes in the internal structure/shape induced by the rotation.
-
Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of 110Zr. Paul, N.; Corsi, A.; Obertelli, A.; Doornenbal, P.; Authelet, G.; Baba, H.; Bally, B.; Bender, M.; Calvet, D.; Château, F.; Chen, S.; Delaroche, J.-P.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Girod, M.; Heenen, P.-H.; Lapoux, V.; Libert, J.; Motobayashi, T.; Niikura, M.; Otsuka, T.; Rodríguez, T. R.; Roussé, J.-Y.; Sakurai, H.; Santamaria, C.; Shimizu, N.; Steppenbeck, D.; Taniuchi, R.; Togashi, T.; Tsunoda, Y.; Uesaka, T.; Ando, T.; Arici, T.; Blazhev, A.; Browne, F.; Bruce, A. M.; Carroll, R.; Chung, L. X.; Cortés, M. L.; Dewald, M.; Ding, B.; Flavigny, F.; Franchoo, S.; Górska, M.; Gottardo, A.; Jungclaus, A.; Lee, J.; Lettmann, M.; Linh, B. D.; Liu, J.; Liu, Z.; Lizarazo, C.; Momiyama, S.; Moschner, K.; Nagamine, S.; Nakatsuka, N.; Nita, C.; Nobs, C. R.; Olivier, L.; Patel, Z.; Podolyák, Zs.; Rudigier, M.; Saito, T.; Shand, C.; Söderström, P.-A.; Stefan, I.; Orlandi, R.; Vaquero, V.; Werner, V.; Wimmer, K.; Xu, Z. in Phys. Rev. Lett. (2017). 118(3) 032501.
-
Isomers and high-spin structures in the N=81 isotones 135Xe and 137Ba. Vogt, A.; Birkenbach, B.; Reiter, P.; Blazhev, A.; Siciliano, M.; Hadyńska-Klęk, K.; Valiente-Dobón, J. J.; Wheldon, C.; Teruya, E.; Yoshinaga, N.; Arnswald, K.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Chakrawarthy, R. S.; Chapman, R.; Cline, D.; Corradi, L.; Crespi, F. C. L; Cromaz, M.; de Angelis, G.; Eberth, J.; Fallon, P.; Farnea, E.; Fioretto, E.; Freeman, S. J.; Fu, B.; Gadea, A.; Geibel, K.; Gelletly, W.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hayes, A. B.; Hess, H.; Hirsch, R.; Hua, H.; John, P. R.; Jolie, J.; Jungclaus, A.; Kaya, L.; Korten, W.; Lee, I. Y.; Leoni, S.; Lewandowski, L.; Liang, X.; Lunardi, S.; Macchiavelli, A. O.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Müller-Gatermann, C.; Napoli, D.; Pearson, C. J.; Pellegri, L.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Queiser, M.; Radeck, F.; Recchia, F.; Regan, P. H.; Rosiak, D.; Saed-Samii, N.; Şahin, E.; Scarlassara, F.; Schneiders, D.; Seidlitz, M.; Siebeck, B.; Sletten, G.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Teng, R.; Ur, C.; Vandone, V.; Warner, D. D.; Wiens, A.; Wu, C. Y.; Zell, K. O. in Phys. Rev. C (2017). 95(2) 024316.
-
Lifetime measurements in 100Ru. Konstantinopoulos, T.; Petkov, P.; Goasduff, A.; Arici, T.; Astier, A.; Atanasova, L.; Axiotis, M.; Bonatsos, D.; Detistov, P.; Dewald, A.; Eller, M. J.; Foteinou, V.; Gargano, A.; Georgiev, G.; Gladnishki, K.; Gottardo, A.; Harissopulos, S.; Hess, H.; Kaim, S.; Kocheva, D.; Kusoglu, A.; Lagoyannis, A.; Ljungvall, J.; Lutter, R.; Matea, I.; Melon, B.; Mertzimekis, T. J.; Nannini, A.; Petrache, C. M.; Petrovici, A.; Provatas, G.; Reiter, P.; Rocchini, M.; Roccia, S.; Seidlitz, M.; Siebeck, B.; Suzuki, D.; Warr, N.; De Witte, H.; Zerrouki, T. in Phys. Rev. C (2017). 95(1) 014309.
-
Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of ¹¹⁰Zr. Paul, N.; Corsi, A.; Obertelli, A.; Doornenbal, P.; Authelet, G.; Baba, H.; Bally, B.; Bender, M.; Calvet, D.; Château, F.; Chen, S.; Delaroche, J.-P.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Girod, M.; Heenen, P.-H.; Lapoux, V.; Libert, J.; Motobayashi, T.; Niikura, M.; Otsuka, T.; Rodríguez, T. R.; Roussé, J.-Y.; Sakurai, H.; Santamaria, C.; Shimizu, N.; Steppenbeck, D.; Taniuchi, R.; Togashi, T.; Tsunoda, Y.; Uesaka, T.; Ando, T.; Arici, T.; Blazhev, A.; Browne, F.; Bruce, A. M.; Carroll, R.; Chung, L. X.; Cortés, M. L.; Dewald, M.; Ding, B.; Flavigny, F.; Franchoo, S.; Górska, M.; Gottardo, A.; Jungclaus, A.; Lee, J.; Lettmann, M.; Linh, B. D.; Liu, J.; Liu, Z.; Lizarazo, C.; Momiyama, S.; Moschner, K.; Nagamine, S.; Nakatsuka, N.; Nita, C.; Nobs, C. R.; Olivier, L.; Patel, Z.; Podolyák, Zs.; Rudigier, M.; Saito, T.; Shand, C.; Söderström, P.-A.; Stefan, I.; Orlandi, R.; Vaquero, V.; Werner, V.; Wimmer, K.; Xu, Z. in Phys. Rev. Lett. (2017). 118(3) 032501.
-
Lifetime measurements with improved precision in 30,32S and possible influence of large-scale clustering on the appearance of strongly deformed states. Petkov, P.; Müller-Gatermann, C.; Dewald, A.; Blazhev, A.; Fransen, C.; Jolie, J.; Scholz, P.; Zell, K. O.; Zilges, A. in Phys. Rev. C (2017). 96(3) 034326.
-
Properties of γ-decaying isomers and isomeric ratios in the 100Sn region. Park, J.; Krücken, R.; Lubos, D.; Gernhäuser, R.; Lewitowicz, M.; Nishimura, S.; Ahn, D. S.; Baba, H.; Blank, B.; Blazhev, A.; Boutachkov, P.; Browne, F.; Čeliković, I.; de France, G.; Doornenbal, P.; Faestermann, T.; Fang, Y.; Fukuda, N.; Giovinazzo, J.; Goel, N.; Górska, M.; Grawe, H.; Ilieva, S.; Inabe, N.; Isobe, T.; Jungclaus, A.; Kameda, D.; Kim, G. D.; Kim, Y.-K.; Kojouharov, I.; Kubo, T.; Kurz, N.; Lorusso, G.; Moschner, K.; Murai, D.; Nishizuka, I.; Patel, Z.; Rajabali, M. M.; Rice, S.; Sakurai, H.; Schaffner, H.; Shimizu, Y.; Sinclair, L.; Söderström, P.-A.; Steiger, K.; Sumikama, T.; Suzuki, H.; Takeda, H.; Wang, Z.; Watanabe, H.; Wu, J.; Xu, Z. Y. in Phys. Rev. C (2017). 96(4) 044311.
-
High-spin structures in 132Xe and 133Xe and evidence for isomers along the N=79 isotones. Vogt, A.; Siciliano, M.; Birkenbach, B.; Reiter, P.; Hadyńska-Klęk, K.; Wheldon, C.; Valiente-Dobón, J. J.; Teruya, E.; Yoshinaga, N.; Arnswald, K.; Bazzacco, D.; Blazhev, A.; Bracco, A.; Bruyneel, B.; Chakrawarthy, R. S.; Chapman, R.; Cline, D.; Corradi, L.; Crespi, F. C. L.; Cromaz, M.; de Angelis, G.; Eberth, J.; Fallon, P.; Farnea, E.; Fioretto, E.; Fransen, C.; Freeman, S. J.; Fu, B.; Gadea, A.; Gelletly, W.; Giaz, A.; Görgen, A.; Gottardo, A.; Hayes, A. B.; Hess, H.; Hetzenegger, R.; Hirsch, R.; Hua, H.; John, P. R.; Jolie, J.; Jungclaus, A.; Karayonchev, V.; Kaya, L.; Korten, W.; Lee, I. Y.; Leoni, S.; Liang, X.; Lunardi, S.; Macchiavelli, A. O.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Müller-Gatermann, C.; Napoli, D.; Pearson, C. J.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Queiser, M.; Recchia, F.; Regan, P. H.; Régis, J.-M.; Saed-Samii, N.; Şahin, E.; Scarlassara, F.; Seidlitz, M.; Siebeck, B.; Sletten, G.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, S.; Szpak, B.; Teng, R.; Ur, C.; Warner, D. D.; Wolf, K.; Wu, C. Y.; Zell, K. O. in Phys. Rev. C (2017). 96(2) 024321.
-
Cross-shell excitations from the fp shell: Lifetime measurements in 61Zn. Queiser, M.; Vogt, A.; Seidlitz, M.; Reiter, P.; Togashi, T.; Shimizu, N.; Utsuno, Y.; Otsuka, T.; Honma, M.; Petkov, P.; Arnswald, K.; Altenkirch, R.; Birkenbach, B.; Blazhev, A.; Braunroth, T.; Dewald, A.; Eberth, J.; Fransen, C.; Fu, B.; Hess, H.; Hetzenegger, R.; Hirsch, R.; Jolie, J.; Karayonchev, V.; Kaya, L.; Lewandowski, L.; Müller-Gatermann, C.; Régis, J.-M.; Rosiak, D.; Schneiders, D.; Siebeck, B.; Steinbach, T.; Wolf, K.; Zell, K.-O. in Phys. Rev. C (2017). 96(4) 044313.
-
Combining γ-ray and particle spectroscopy with SONIC@HORUS. Pickstone, Simon G.; Weinert, Michael; Färber, Michelle; Heim, Felix; Hoemann, Elena; Mayer, Jan; Müscher, Miriam; Prill, Sarah; Scholz, Philipp; Spieker, Mark; Vielmetter, Vera; Wilhelmy, Julius; Zilges, Andreas in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2017). 875 104 - 110.
Abstract The particle spectrometer SONIC for particle-γ coincidence measurements was commissioned at the Institute for Nuclear Physics in Cologne, Germany. SONIC consists of up to 12 silicon ΔE-E telescopes with a total solid angle coverage of 9%, and will complement HORUS, a γ-ray spectrometer with 14 HPGe detectors. The combined setup SONIC@HORUS is used to investigate the γ-decay behaviour of low-spin states up to the neutron separation threshold excited by light-ion inelastic scattering and transfer reactions using beams provided by a 10 MV FN Tandem accelerator. The particle-γ coincidence method will be presented using data from a 92Mo(p,p’γ) experiment. In a 119Sn(d,X) experiment, excellent particle identification has been achieved because of the good energy resolution of the silicon detectors of approximately 20 keV. Due to the non-negligible momentum transfer in the reaction, a Doppler correction of the detected γ-ray energy has to be performed, using the additional information from measuring the ejectile energy and direction. The high sensitivity of the setup is demonstrated by the results from a 94Mo(p,p’γ) experiment, where small γ-decay branching ratios have been deduced.
-
Search for the 73Ga ground-state doublet splitting in the β decay of 73Zn. Vedia, V.; Paziy, V.; Fraile, L. M.; Mach, H.; Walters, W. B.; Aprahamian, A.; Bernards, C.; Briz, J. A.; Bucher, B.; Chiara, C. J.; Dlouhý, Z.; Gheorghe, I.; Ghiţă, D.; Hoff, P.; Jolie, J.; Köster, U.; Kurcewicz, W.; Lică, R.; Mărginean, N.; Mărginean, R.; Olaizola, B.; Régis, J.-M.; Rudigier, M.; Sava, T.; Simpson, G. S.; Stănoiu, M.; Stroe, L. in Phys. Rev. C (2017). 96(3) 034311.
-
Experimental study of the lifetime and phase transition in neutron-rich 98,100,102Zr. Ansari, S.; Régis, J.-M.; Jolie, J.; Saed-Samii, N.; Warr, N.; Korten, W.; Zielińska, M.; Salsac, M.-D.; Blanc, A.; Jentschel, M.; Köster, U.; Mutti, P.; Soldner, T.; Simpson, G. S.; Drouet, F.; Vancraeyenest, A.; de France, G.; Clément, E.; Stezowski, O.; Ur, C. A.; Urban, W.; Regan, P. H.; Podolyák, Zs.; Larijani, C.; Townsley, C.; Carroll, R.; Wilson, E.; Mach, H.; Fraile, L. M.; Paziy, V.; Olaizola, B.; Vedia, V.; Bruce, A. M.; Roberts, O. J.; Smith, J. F.; Scheck, M.; Kröll, T.; Hartig, A.-L.; Ignatov, A.; Ilieva, S.; Lalkovski, S.; Mărginean, N.; Otsuka, T.; Shimizu, N.; Togashi, T.; Tsunoda, Y. in Phys. Rev. C (2017). 96(5) 054323.
-
EXILL—a high-efficiency, high-resolution setup for γ-spectroscopy at an intense cold neutron beam facility. Jentschel, M.; Blanc, A.; de France, G.; Köster, U.; Leoni, S.; Mutti, P.; Simpson, G.; Soldner, T.; Ur, C.; Urban, W.; Ahmed, S.; Astier, A.; Augey, L.; Back, T.; Ba̧czyk, P.; Bajoga, A.; Balabanski, D.; Belgya, T.; Benzoni, G.; Bernards, C.; Biswas, D.C.; Bocchi, G.; Bottoni, S.; Britton, R.; Bruyneel, B.; Burnett, J.; Cakirli, R.B.; Carroll, R.; Catford, W.; Cederwall, B.; Celikovic, I.; Cieplicka-Oryńczak, N.; Clement, E.; Cooper, N.; Crespi, F.; Csatlos, M.; Curien, D.; Czerwiński, M.; Danu, L.S.; Davies, A.; Didierjean, F.; Drouet, F.; Duchêne, G.; Ducoin, C.; Eberhardt, K.; Erturk, S.; Fraile, L.M.; Gottardo, A.; Grente, L.; Grocutt, L.; Guerrero, C.; Guinet, D.; Hartig, A.-L.; Henrich, C.; Ignatov, A.; Ilieva, S.; Ivanova, D.; John, B.V.; John, R.; Jolie, J.; Kisyov, S.; Krticka, M.; Konstantinopoulos, T.; Korgul, A.; Krasznahorkay, A.; Kröll, T.; Kurpeta, J.; Kuti, I.; Lalkovski, S.; Larijani, C.; Leguillon, R.; Lica, R.; Litaize, O.; Lozeva, R.; Magron, C.; Mancuso, C.; Martinez, E. Ruiz; Massarczyk, R.; Mazzocchi, C.; Melon, B.; Mengoni, D.; Michelagnoli, C.; Million, B.; Mokry, C.; Mukhopadhyay, S.; Mulholland, K.; Nannini, A.; Napoli, D.R.; Olaizola, B.; Orlandi, R.; Patel, Z.; Paziy, V.; Petrache, C.; Pfeiffer, M.; Pietralla, N.; Podolyak, Z.; Ramdhane, M.; Redon, N.; Regan, P.; Regis, J.M.; Regnier, D.; Oliver, R. J.; Rudigier, M.; Runke, J.; Rza̧ca-Urban, T.; Saed-Samii, N.; Salsac, M.D.; Scheck, M.; Schwengner, R.; Sengele, L.; Singh, P.; Smith, J.; Stezowski, O.; Szpak, B.; Thomas, T.; Thürauf, M.; Timar, J.; Tom, A.; Tomandl, I.; Tornyi, T.; Townsley, C.; Tuerler, A.; Valenta, S.; Vancraeyenest, A.; Vandone, V.; Vanhoy, J.; Vedia, V.; Warr, N.; Werner, V.; Wilmsen, D.; Wilson, E.; Zerrouki, T.; Zielinska, M. in Journal of Instrumentation (2017). 12(11) P11003.
In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of γ-rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 10 8 n s −1 cm −2 at the target position and negligible neutron halo. The target was surrounded by an array of eight to ten anti-Compton shielded EXOGAM Clover detectors, four to six anti-Compton shielded large coaxial GASP detectors and two standard Clover detectors. For a part of the campaign the array was combined with 16 LaBr 3 :(Ce) detectors from the FATIMA collaboration. The detectors were arranged in an array of rhombicuboctahedron geometry, providing the possibility to carry out very precise angular correlation and directional-polarization correlation measurements. The triggerless acquisition system allowed a signal collection rate of up to 6 × 10 5 Hz. The data allowed to set multi-fold coincidences to obtain decay schemes and in combination with the FATIMA array of LaBr 3 :(Ce) detectors to analyze half-lives of excited levels in the pico- to microsecond range. Precise energy and efficiency calibrations of EXILL were performed using standard calibration sources of 133 Ba, 60 Co and 152 Eu as well as data from the reactions 27 Al(n,γ) 28 Al and 35 Cl( n ,γ) 36 Cl in the energy range from 30 keV up to 10 MeV.
-
Isomers and high-spin structures in the isotones ¹³⁵Xe and ¹³⁷ Ba. Vogt, A.; Birkenbach, B.; Reiter, P.; Blazhev, A.; Siciliano, M.; Hadyńska-Klęk, K.; Valiente-Dobón, J. J.; Wheldon, C.; Teruya, E.; Yoshinaga, N.; Arnswald, K.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Chakrawarthy, R. S.; Chapman, R.; Cline, D.; Corradi, L.; Crespi, F. C. L; Cromaz, M.; de Angelis, G.; Eberth, J.; Fallon, P.; Farnea, E.; Fioretto, E.; Freeman, S. J.; Fu, B.; Gadea, A.; Geibel, K.; Gelletly, W.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hayes, A. B.; Hess, H.; Hirsch, R.; Hua, H.; John, P. R.; Jolie, J.; Jungclaus, A.; Kaya, L.; Korten, W.; Lee, I. Y.; Leoni, S.; Lewandowski, L.; Liang, X.; Lunardi, S.; Macchiavelli, A. O.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Müller-Gatermann, C.; Napoli, D.; Pearson, C. J.; Pellegri, L.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Queiser, M.; Radeck, F.; Recchia, F.; Regan, P. H.; Rosiak, D.; Saed-Samii, N.; Şahin, E.; Scarlassara, F.; Schneiders, D.; Seidlitz, M.; Siebeck, B.; Sletten, G.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Teng, R.; Ur, C.; Vandone, V.; Warner, D. D.; Wiens, A.; Wu, C. Y.; Zell, K. O. in Phys. Rev. C (2017). 95(2) 024316.
-
The role of core excitations in the structure and decay of the 16⁺ spin-gap isomer in ⁹⁶Cd. Davies, P.J.; Grawe, H.; Moschner, K.; Blazhev, A.; Wadsworth, R.; Boutachkov, P.; Ameil, F.; Yagi, A.; Baba, H.; Bäck, T.; Dewald, M.; Doornenbal, P.; Faestermann, T.; Gengelbach, A.; Gerl, J.; Gernhäeuser, R.; Go, S.; Górska, M.; Gregor, E.; Isobe, T.; Jenkins, D.G.; Hotaka, H.; Jolie, J.; Kojouharov, I.; Kurz, N.; Lewitowicz, M.; Lorusso, G.; Maier, L.; Merchan, E.; Naqvi, F.; Nishibata, H.; Nishimura, D.; Nishimura, S.; Nowacki, F.; Pietralla, N.; Schaffner, H.; Söderström, P.-A.; Jung, H.S.; Steiger, K.; Sumikama, T.; Taprogge, J.; Thöle, P.; Warr, N.; Watanabe, H.; Werner, V.; Xu, Z.Y.; Yoshinaga, K.; Zhu, Y. in Physics Letters B (2017). 767 474 - 479.
-
Anomalies in the Charge Yields of Fission Fragments from the ²³⁸U(n,f) Reaction. Wilson, J. N.; Lebois, M.; Qi, L.; Amador-Celdran, P.; Bleuel, D.; Briz, J. A.; Carroll, R.; Catford, W.; De Witte, H.; Doherty, D. T.; Eloirdi, R.; Georgiev, G.; Gottardo, A.; Goasduff, A.; Hadyńska-Klęk, K.; Hauschild, K.; Hess, H.; Ingeberg, V.; Konstantinopoulos, T.; Ljungvall, J.; Lopez-Martens, A.; Lorusso, G.; Lozeva, R.; Lutter, R.; Marini, P.; Matea, I.; Materna, T.; Mathieu, L.; Oberstedt, A.; Oberstedt, S.; Panebianco, S.; Podolyák, Zs.; Porta, A.; Regan, P. H.; Reiter, P.; Rezynkina, K.; Rose, S. J.; Sahin, E.; Seidlitz, M.; Serot, O.; Shearman, R.; Siebeck, B.; Siem, S.; Smith, A. G.; Tveten, G. M.; Verney, D.; Warr, N.; Zeiser, F.; Zielinska, M. in Phys. Rev. Lett. (2017). 118(22) 222501.
-
A revised B(E2;2⁺₁→ 0⁺₁) value in the semi-magic nucleus ²¹⁰Po. Kocheva, D.; Rainovski, G.; Jolie, J.; Pietralla, N.; Blazhev, A.; Astier, A.; Altenkirch, R.; Ansari, S.; Braunroth, Th.; Cortés, M. L.; Dewald, A.; Diel, F.; Djongolov, M.; Fransen, C.; Gladnishki, K.; Hennig, A.; Karayonchev, V.; Keatings, J. M.; Kluge, E.; Litzinger, J.; Müller-Gatermann, C.; Petkov, P.; Rudigier, M.; Scheck, M.; Scholz, Ph.; Spagnoletti, P.; Spieker, M.; Stahl, C.; Stegmann, R.; Stoyanova, M.; Th{ö}le, P.; Warr, N.; Werner, V.; Witt, W.; Wölk, D.; Zell, K. O.; Van Isacker, P.; Ponomarev, V. Yu. in The European Physical Journal A (2017). 53(9) 175.
A revised B(E2;2⁺₁→ 0⁺₁) value in the semi-magic nucleus ²¹⁰Po
-
Shape Evolution in Neutron-Rich Krypton Isotopes Beyond N=60: First Spectroscopy of ⁹⁸'¹⁰⁰Kr. Flavigny, F.; Doornenbal, P.; Obertelli, A.; Delaroche, J.-P.; Girod, M.; Libert, J.; Rodriguez, T. R.; Authelet, G.; Baba, H.; Calvet, D.; Château, F.; Chen, S.; Corsi, A.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Lapoux, V.; Motobayashi, T.; Niikura, M.; Paul, N.; Roussé, J.-Y.; Sakurai, H.; Santamaria, C.; Steppenbeck, D.; Taniuchi, R.; Uesaka, T.; Ando, T.; Arici, T.; Blazhev, A.; Browne, F.; Bruce, A.; Carroll, R.; Chung, L. X.; Cortés, M. L.; Dewald, M.; Ding, B.; Franchoo, S.; Górska, M.; Gottardo, A.; Jungclaus, A.; Lee, J.; Lettmann, M.; Linh, B. D.; Liu, J.; Liu, Z.; Lizarazo, C.; Momiyama, S.; Moschner, K.; Nagamine, S.; Nakatsuka, N.; Nita, C.; Nobs, C. R.; Olivier, L.; Orlandi, R.; Patel, Z.; Podolyák, Zs.; Rudigier, M.; Saito, T.; Shand, C.; Söderström, P. A.; Stefan, I.; Vaquero, V.; Werner, V.; Wimmer, K.; Xu, Z. in Phys. Rev. Lett. (2017). 118(24) 242501.
-
Triaxiality of neutron-rich ⁸⁴’⁸⁶’⁸⁸Ge from low-energy nuclear spectra. Lettmann, M.; Werner, V.; Pietralla, N.; Doornenbal, P.; Obertelli, A.; Rodrìguez, T. R.; Sieja, K.; Authelet, G.; Baba, H.; Calvet, D.; Château, F.; Chen, S.; Corsi, A.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Lapoux, V.; Motobayashi, T.; Niikura, M.; Paul, N.; Roussé, J.-Y.; Sakurai, H.; Santamaria, C.; Steppenbeck, D.; Taniuchi, R.; Uesaka, T.; Ando, T.; Arici, T.; Blazhev, A.; Browne, F.; Bruce, A.; Caroll, R. J.; Chung, L. X.; Cortés, M. L.; Dewald, M.; Ding, B.; Flavigny, F.; Franchoo, S.; Górska, M.; Gottardo, A.; Jungclaus, A.; Lee, J.; Linh, B. D.; Liu, J.; Liu, Z.; Lizarazo, C.; Momiyama, S.; Moschner, K.; Nagamine, S.; Nakatsuka, N.; Nita, C.; Nobs, C. R.; Olivier, L.; Patel, Z.; Podolyák, Zs.; Rudigier, M.; Saito, T.; Shand, C.; Söderström, P.-A.; Stefan, I.; Vaquero, V.; Wimmer, K.; Xu, Z. in Phys. Rev. C (2017). 96(1) 011301.
-
Erratum: Abrupt shape transition at neutron number N = 60: B(E2) values in ⁹⁴’⁹⁶’⁹⁸Sr from fast γ-γ timing. Régis, J.-M.; Jolie, J.; Saed-Samii, N.; Warr, N.; Pfeiffer, M.; Blanc, A.; Jentschel, M.; Késter, U.; Mutti, P.; Soldner, T.; Simpson, G. S.; Drouet, F.; Vancraeyenest, A.; de France, G.; Clément, E.; Stezowski, O.; Ur, C. A.; Urban, W.; Regan, P. H.; Podolyák, Zs.; Larijani, C.; Townsley, C.; Carroll, R.; Wilson, E.; Fraile, L. M.; Mach, H.; Paziy, V.; Olaizola, B.; Vedia, V.; Bruce, A. M.; Roberts, O. J.; Smith, J. F.; Scheck, M.; Kröll, T.; Hartig, A.-L.; Ignatov, A.; Ilieva, S.; Lalkovski, S.; Korten, W.; Marginean, N.; Otsuka, T.; Shimizu, N.; Togashi, T.; Tsunoda, Y. in Phys. Rev. C (2017). 95(6) 069902.
-
Simultaneous investigation of the T = 1( Jπ = 0⁺) and T = 0( Jπ = 9⁺) β decays in ⁷⁰Br. Morales, A. I.; Algora, A.; Rubio, B.; Kaneko, K.; Nishimura, S.; Aguilera, P.; Orrigo, S. E. A.; Molina, F.; de Angelis, G.; Recchia, F.; Kiss, G.; Phong, V. H.; Wu, J.; Nishimura, D.; Oikawa, H.; Goigoux, T.; Giovinazzo, J.; Ascher, P.; Agramunt, J.; Ahn, D. S.; Baba, H.; Blank, B.; Borcea, C.; Boso, A.; Davies, P.; Diel, F.; Dombrádi, Zs.; Doornenbal, P.; Eberth, J.; de France, G.; Fujita, Y.; Fukuda, N.; Ganioglu, E.; Gelletly, W.; Gerbaux, M.; Grévy, S.; Guadilla, V.; Inabe, N.; Isobe, T.; Kojouharov, I.; Korten, W.; Kubo, T.; Kubono, S.; Kurtukián Nieto, T.; Kurz, N.; Lee, J.; Lenzi, S.; Liu, J.; Lokotko, T.; Lubos, D.; Magron, C.; Montaner-Pizá, A.; Napoli, D. R.; Sakurai, H.; Schaffner, H.; Shimizu, Y.; Sidong, C.; Söderström, P.-A.; Sumikama, T.; Suzuki, H.; Takeda, H.; Takei, Y.; Tanaka, M.; Yagi, S. in Phys. Rev. C (2017). 95(6) 064327.
-
Nuclear structure investigations of ⁸⁴Sr and ⁸⁶Sr using γ-ray spectroscopic methods. Duckwitz, H.; Petkov, P.; Thomas, T.; Ahn, T.; Blazhev, A.; Cooper, N.; Fransen, C.; Hinton, M.; Ilie, G.; Jolie, J.; Werner, V. in Nuclear Physics A (2017). 965(Supplement C) 13 - 56.
-
Low-lying structure and shape evolution in neutron-rich Se isotopes. Chen, S.; Doornenbal, P.; Obertelli, A.; Rodríguez, T. R.; Authelet, G.; Baba, H.; Calvet, D.; Château, F.; Corsi, A.; Delbart, A.; Gheller, J.-M.; Giganon, A.; Gillibert, A.; Lapoux, V.; Motobayashi, T.; Niikura, M.; Paul, N.; Roussé, J.-Y.; Sakurai, H.; Santamaria, C.; Steppenbeck, D.; Taniuchi, R.; Uesaka, T.; Ando, T.; Arici, T.; Blazhev, A.; Browne, F.; Bruce, A. M.; Caroll, R.; Chung, L. X.; Cortés, M. L.; Dewald, M.; Ding, B.; Flavigny, F.; Franchoo, S.; Górska, M.; Gottardo, A.; Jungclaus, A.; Lee, J.; Lettmann, M.; Linh, B. D.; Liu, J.; Liu, Z.; Lizarazo, C.; Momiyama, S.; Moschner, K.; Nagamine, S.; Nakatsuka, N.; Nita, C. R.; Nobs, C.; Olivier, L.; Orlandi, R.; Patel, Z.; Podolyak, Zs.; Rudigier, M.; Saito, T.; Shand, C.; Söderström, P.-A.; Stefan, I.; Vaquero, V.; Werner, V.; Wimmer, K.; Xu, Z. in Phys. Rev. C (2017). 95(4) 041302.
-
β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station. Lică, R; Benzoni, G; Morales, A I; Borge, M J G; Fraile, L M; Mach, H; Madurga, M; Sotty, C; Vedia, V; Witte, H De; Benito, J; Berry, T; Blasi, N; Bracco, A; Camera, F; Ceruti, S; Charviakova, V; Cieplicka-Oryńczak, N; Costache, C; Crespi, F C L; Creswell, J; Fernández-Martínez, G; Fynbo, H; Greenlees, P; Homm, I; Huyse, M; Jolie, J; Karayonchev, V; Köster, U; Konki, J; Kröll, T; Kurcewicz, J; Kurtukian-Nieto, T; Lazarus, I; Leoni, S; Lund, M; Marginean, N; Marginean, R; Mihai, C; Mihai, R; Negret, A; Orduz, A; Patyk, Z; Pascu, S; Pucknell, V; Rahkila, P; Regis, J M; Rotaru, F; Saed-Sami, N; Sánchez-Tembleque, V; Stanoiu, M; Tengblad, O; Thuerauf, M; Turturica, A; Duppen, P Van; Warr, N in Journal of Physics G: Nuclear and Particle Physics (2017). 44(5) 054002.
Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd- A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even- A ones, pointing to a major contribution from vibrations. In the present paper we present results from a recent study focused on 148–150 Cs β -decay performed at the ISOLDE Decay Station equipped with fast-timing detectors. A detailed analysis of the measured decay half-lives and decay scheme of 149 Ba is presented, giving a first insight in the structure of this neutron-rich nucleus.
-
E2 decay strength of the M1 scissors mode of ¹⁵⁶Gd and its first excited rotational state. Beck, T.; Beller, J.; Pietralla, N.; Bhike, M.; Birkhan, J.; Derya, V.; Gayer, U.; Hennig, A.; Isaak, J.; Löher, B.; Ponomarev, V. Yu.; Richter, A.; Romig, C.; Savran, D.; Scheck, M.; Tornow, W.; Werner, V.; Zilges, A.; Zweidinger, M. in Phys. Rev. Lett. (2017). 118(21) 212502.
-
Lifetime measurements in ¹⁰⁰Ru. Konstantinopoulos, T.; Petkov, P.; Goasduff, A.; Arici, T.; Astier, A.; Atanasova, L.; Axiotis, M.; Bonatsos, D.; Detistov, P.; Dewald, A.; Eller, M. J.; Foteinou, V.; Gargano, A.; Georgiev, G.; Gladnishki, K.; Gottardo, A.; Harissopulos, S.; Hess, H.; Kaim, S.; Kocheva, D.; Kusoglu, A.; Lagoyannis, A.; Ljungvall, J.; Lutter, R.; Matea, I.; Melon, B.; Mertzimekis, T. J.; Nannini, A.; Petrache, C. M.; Petrovici, A.; Provatas, G.; Reiter, P.; Rocchini, M.; Roccia, S.; Seidlitz, M.; Siebeck, B.; Suzuki, D.; Warr, N.; De Witte, H.; Zerrouki, T. in Phys. Rev. C (2017). 95(1) 014309.
-
Evolution of collectivity in the N=100 isotones near ¹⁷⁰Yb. Karayonchev, V.; Régis, J.-M.; Jolie, J.; Blazhev, A.; Altenkirch, R.; Ansari, S.; Dannhoff, M.; Diel, F.; Esmaylzadeh, A.; Fransen, C.; Gerst, R.-B.; Moschner, K.; Müller-Gatermann, C.; Saed-Samii, N.; Stegemann, S.; Warr, N.; Zell, K. O. in Phys. Rev. C (2017). 95(3) 034316.
-
⁹⁶Kr - Low-Z Boundary of the Island of Deformation at N = 60. Dudouet, J.; Lemasson, A.; Duchêne, G.; Rejmund, M.; Clément, E.; Michelagnoli, C.; Didierjean, F.; Korichi, A.; Maquart, G.; Stezowski, O.; Lizarazo, C.; Pérez-Vidal, R. M.; Andreoiu, C.; de Angelis, G.; Astier, A.; Delafosse, C.; Deloncle, I.; Dombradi, Z.; de France, G.; Gadea, A.; Gottardo, A.; Jacquot, B.; Jones, P.; Konstantinopoulos, T.; Kuti, I.; Le Blanc, F.; Lenzi, S. M.; Li, G.; Lozeva, R.; Million, B.; Napoli, D. R.; Navin, A.; Petrache, C. M.; Pietralla, N.; Ralet, D.; Ramdhane, M.; Redon, N.; Schmitt, C.; Sohler, D.; Verney, D.; Barrientos, D.; Birkenbach, B.; Burrows, I.; Charles, L.; Collado, J.; Cullen, D. M.; Désesquelles, P.; Domingo Pardo, C.; González, V.; Harkness-Brennan, L.; Hess, H.; Judson, D. S.; Karolak, M.; Korten, W.; Labiche, M.; Ljungvall, J.; Menegazzo, R.; Mengoni, D.; Pullia, A.; Recchia, F.; Reiter, P.; Salsac, M. D.; Sanchis, E.; Theisen, Ch.; Valiente-Dobón, J. J.; Zielińska, M. in Phys. Rev. Lett. (2017). 118(16) 162501.
-
Lifetime measurement of neutron-rich even-even molybdenum isotopes. Ralet, D.; Pietri, S.; Rodr\'{i}guez, T.; Alaqeel, M.; Alexander, T.; Alkhomashi, N.; Ameil, F.; Arici, T.; Ataifmmode \mbox{\c{c}}else \c{c}\fi{}, A.; Avigo, R.; Bäck, T.; Bazzacco, D.; Birkenbach, B.; Boutachkov, P.; Bruyneel, B.; Bruce, A. M.; Camera, F.; Cederwall, B.; Ceruti, S.; Clément, E.; Cortés, M. L.; Curien, D.; De Angelis, G.; Désesquelles, P.; Dewald, M.; Didierjean, F.; Domingo-Pardo, C.; Doncel, M.; Duchêne, G.; Eberth, J.; Gadea, A.; Gerl, J.; Ghazi Moradi, F.; Geissel, H.; Goigoux, T.; Goel, N.; Golubev, P.; González, V.; Górska, M.; Gottardo, A.; Gregor, E.; Guastalla, G.; Givechev, A.; Habermann, T.; Hackstein, M.; Harkness-Brennan, L.; Henning, G.; Hess, H.; Hüyük, T.; Jolie, J.; Judson, D. S.; Jungclaus, A.; Knoebel, R.; Kojouharov, I.; Korichi, A.; Korten, W.; Kurz, N.; Labiche, M.; Lalovic, N.; Louchart-Henning, C.; Mengoni, D.; Merchán, E.; Million, B.; Morales, A. I.; Napoli, D.; Naqvi, F.; Nyberg, J.; Pietralla, N.; Podolyák, Zs.; Pullia, A.; Prochazka, A.; Quintana, B.; Rainovski, G.; Reese, M.; Recchia, F.; Reiter, P.; Rudolph, D.; Salsac, M. D.; Sanchis, E.; Sarmiento, L. G.; Schaffner, H.; Scheidenberger, C.; Sengele, L.; Singh, B. S. Nara; Singh, P. P.; Stahl, C.; Stezowski, O.; Thoele, P.; Valiente Dobon, J. J.; Weick, H.; Wendt, A.; Wieland, O.; Winfield, J. S.; Wollersheim, H. J.; Zielinska, M. in Phys. Rev. C (2017). 95(3) 034320.
-
Conceptual design of the AGATA 1π array at GANIL. Clément, E.; Michelagnoli, C.; de France, G.; Li, H.J.; Lemasson, A.; Dejean, C. Barthe; Beuzard, M.; Bougault, P.; Cacitti, J.; Foucher, J.-L.; Fremont, G.; Gangnant, P.; Goupil, J.; Houarner, C.; Jean, M.; Lefevre, A.; Legeard, L.; Legruel, F.; Maugeais, C.; Ménager, L.; Ménard, N.; Munoz, H.; Ozille, M.; Raine, B.; Ropert, J.A.; Saillant, F.; Spitaels, C.; Tripon, M.; Vallerand, Ph.; Voltolini, G.; Korten, W.; Salsac, M.-D.; Theisen, Ch.; Zielińska, M.; Joannem, T.; Karolak, M.; Kebbiri, M.; Lotode, A.; Touzery, R.; Walter, Ch.; Korichi, A.; Ljungvall, J.; Lopez-Martens, A.; Ralet, D.; Dosme, N.; Grave, X.; Karkour, N.; Lafay, X.; Legay, E.; Kojouharov, I.; Domingo-Pardo, C.; Gadea, A.; Pérez-Vidal, R.M.; Civera, J.V.; Birkenbach, B.; Eberth, J.; Hess, H.; Lewandowski, L.; Reiter, P.; Nannini, A.; Angelis, G. De; Jaworski, G.; John, P.; Napoli, D.R.; Valiente-Dobón, J.J.; Barrientos, D.; Bortolato, D.; Benzoni, G.; Bracco, A.; Brambilla, S.; Camera, F.; Crespi, F.C.L.; Leoni, S.; Million, B.; Pullia, A.; Wieland, O.; Bazzacco, D.; Lenzi, S.M.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Recchia, F.; Bellato, M.; Isocrate, R.; Canet, F.J. Egea; Didierjean, F.; Duchêne, G.; Baumann, R.; Brucker, M.; Dangelser, E.; Filliger, M.; Friedmann, H.; Gaudiot, G.; Grapton, J.-N.; Kocher, H.; Mathieu, C.; Sigward, M.-H.; Thomas, D.; Veeramootoo, S.; Dudouet, J.; Stézowski, O.; Aufranc, C.; Aubert, Y.; Labiche, M.; Simpson, J.; Burrows, I.; Coleman-Smith, P.J.; Grant, A.; Lazarus, I.H.; Morrall, P.S.; Pucknell, V.F.E.; Boston, A.; Judson, D.S.; Lalović, N.; Nyberg, J.; Collado, J.; González, V.; Kuti, I.; Nyakó, B.M.; Maj, A.; Rudigier, M. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2017). 855(Supplement C) 1 - 12.
-
Nuclear-structure studies of exotic nuclei with MINIBALL. Butler, P A; Cederkall, J; Reiter, P in Journal of Physics G: Nuclear and Particle Physics (2017). 44(4) 044012.
High-resolution γ -ray spectroscopy has been established at ISOLDE for nuclear-structure and nuclear-reaction studies with reaccelerated radioactive ion beams provided by the REX-ISOLDE facility. The MINIBALL spectrometer comprises 24 six-fold segmented, encapsulated high-purity germanium crystals. It was specially designed for highest γ -ray detection efficiency which is advantageous for low-intensity radioactive ion beams. The MINIBALL array has been used in numerous Coulomb-excitation and transfer-reaction experiments with exotic ion beams of energies up to 3 MeV A –1 . The physics case covers a wide range of topics which are addressed with beams ranging from neutron-rich magnesium isotopes up to heavy radium isotopes. In the future the HIE-ISOLDE will allow the in-beam γ -ray spectroscopy program to proceed with higher secondary-beam intensity, higher beam energy and better beam quality.
-
Measurement of lifetimes in ⁶²’⁶⁴Fe,⁶¹’⁶³Co, and ⁵⁹Mn. Klintefjord, M; Ljungvall, J; Görgen, A; Lenzi, S M; Bello Garrote, F L; Blazhev, A; Clément, E; de France, G; Delaroche, J P; Désesquelles, P; Dewald, A; Doherty, D T; Fransen, C; Gengelbach, A; Georgiev, G; Girod, M; Goasduff, A; Gottardo, A; Hadyńska-Klȩk, K; Jacquot, B; Konstantinopoulos, T; Korichi, A; Lemasson, A; Libert, J; Lopez-Martens, A; Michelagnoli, C; Navin, A; Nyberg, J; Pérez-Vidal, R M; Roccia, S; Sahin, E; Stefan, I; Stuchbery, A E; Zielińska, M; Barrientos, D; Birkenbach, B; Boston, A; Charles, L; Ciemala, M; Dudouet, J; Eberth, J; Gadea, A; González, V; Harkness-Brennan, L; Hess, H; Jungclaus, A; Korten, W; Menegazzo, R; Mengoni, D; Million, B; Pullia, A; Ralet, D; Recchia, F; Reiter, P; Salsac, M D; Sanchis, E; Stezowski, O; Theisen, Ch; Valiente Dobon, J J in Phys. Rev. C (2017). 95(2) 024312. 11 p.
-
Characterization and calibration of radiation-damaged double-sided silicon strip detectors. Kaya, L.; Vogt, A.; Reiter, P.; Birkenbach, B.; Hirsch, R.; Arnswald, K.; Hess, H.; Seidlitz, M.; Steinbach, T.; Warr, N.; Wolf, K.; Stahl, C.; Pietralla, N.; Limböck, T.; Meerholz, K.; Lutter, R. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2017). 855 109 - 117.
-
Compton imaging with a highly-segmented, position-sensitive HPGe detector. Steinbach, T.; Hirsch, R.; Reiter, P.; Birkenbach, B.; Bruyneel, B.; Eberth, J.; Gernhäuser, R.; Hess, H.; Lewandowski, L.; Maier, L.; Schlarb, M.; Weiler, B.; Winkel, M. in The European Physical Journal A (2017). 53(2) 23.
A Compton camera based on a highly-segmented high-purity germanium (HPGe) detector and a double-sided silicon-strip detector (DSSD) was developed, tested, and put into operation; the origin of {\\($}{\backslash}gamma{\$\)} \($\gamma$\) radiation was determined successfully. The Compton camera is operated in two different modes. Coincidences from Compton-scattered {\\($}{\backslash}gamma{\$\)} \($\gamma$\) -ray events between DSSD and HPGe detector allow for best angular resolution; while the high-efficiency mode takes advantage of the position sensitivity of the highly-segmented HPGe detector. In this mode the setup is sensitive to the whole {\\($} 4{\backslash}pi{\$\)} 4 \($\pi$\) solid angle. The interaction-point positions in the 36-fold segmented large-volume HPGe detector are determined by pulse-shape analysis (PSA) of all HPGe detector signals. Imaging algorithms were developed for each mode and successfully implemented. The angular resolution sensitively depends on parameters such as geometry, selected multiplicity and interaction-point distances. Best results were obtained taking into account the crosstalk properties, the time alignment of the signals and the distance metric for the PSA for both operation modes. An angular resolution between {\\($} 13.8^{\{}{\backslash}circ{\}}{\$\)} 13 . 8 ∘ and {\\($} 19.1^{\{}{\backslash}circ{\}}{\$\)} 19 . 1 ∘ , depending on the minimal interaction-point distance for the high-efficiency mode at an energy of 1275 keV, was achieved. In the coincidence mode, an increased angular resolution of {\\($} 4.6^{\{}{\backslash}circ{\}}{\$\)} 4 . 6 ∘ was determined for the same {\\($}{\backslash}gamma{\$\)} \($\gamma$\) -ray energy.
-
A dedicated {AMS} setup for medium mass isotopes at the Cologne {FN} tandem accelerator. Schiffer, M.; Altenkirch, R.; Feuerstein, C.; Müller-Gatermann, C.; Hackenberg, G.; Herb, S.; Bhandari, P.; Heinze, S.; Stolz, A.; Dewald, A. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2017). 406 287--291.
-
Relativistic Coulomb excitation of 88Kr. Moschner, K.; Blazhev, A.; Jolie, J.; Warr, N.; Boutachkov, P.; Bednarczyk, P.; Sieja, K.; Algora, A.; Ameil, F.; Bentley, M. A.; Brambilla, S.; Braun, N.; Camera, F.; Cederkäll, J.; Corsi, A.; Danchev, M.; DiJulio, D.; Fahlander, C.; Gerl, J.; Giaz, A.; Golubev, P.; Górska, M.; Grebosz, J.; Habermann, T.; Hackstein, M.; Hoischen, R.; Kojouharov, I.; Kurz, N.; Mărginean, N.; Merchán, E.; Möller, T.; Naqvi, F.; Nara Singh, B. S.; Nociforo, C.; Pietralla, N.; Pietri, S.; Podolyák, Zs.; Prochazka, A.; Reese, M.; Reiter, P.; Rudigier, M.; Rudolph, D.; Sava, T.; Schaffner, H.; Scruton, L.; Taprogge, J.; Thomas, T.; Weick, H.; Wendt, A.; Wieland, O.; Wollersheim, H.-J. in Phys. Rev. C (2016). 94(5) 054323.
-
Nuclear structure of 96,98Mo: Shape coexistence and mixed-symmetry states. Thomas, T.; Werner, V.; Jolie, J.; Nomura, K.; Ahn, T.; Cooper, N.; Duckwitz, H.; Fitzler, A.; Fransen, C.; Gade, A.; Hinton, M.; Ilie, G.; Jessen, K.; Linnemann, A.; Petkov, P.; Pietralla, N.; Radeck, D. in Nuclear Physics A (2016). 947 203 - 233.
Abstract Excited low-spin states in 96Mo and 98Mo have been studied in γγ angular correlation experiments in order to determine spins and multipole mixing ratios. Furthermore, from a Doppler lineshape analysis effective lifetimes τ in the femtosecond range were obtained. The experimental data show a complex spectrum due to configuration mixing, which is confirmed by Interacting Boson Model calculations based on a Skyrme energy density functional. The M1-transition strengths of transitions depopulating excited 2+ states to the first 2+ state are discussed in terms of the proton–neutron mixed symmetry.
-
Measurement of picosecond lifetimes in neutron-rich Xe isotopes. Ilieva, S.; Kröll, Th.; Régis, J.-M.; Saed-Samii, N.; Blanc, A.; Bruce, A. M.; Fraile, L. M.; de France, G.; Hartig, A.-L.; Henrich, C.; Ignatov, A.; Jentschel, M.; Jolie, J.; Korten, W.; Köster, U.; Lalkovski, S.; Lozeva, R.; Mach, H.; Mărginean, N.; Mutti, P.; Paziy, V.; Regan, P. H.; Simpson, G. S.; Soldner, T.; Thürauf, M.; Ur, C. A.; Urban, W.; Warr, N. in Phys. Rev. C (2016). 94(3) 034302.
-
Pair neutron transfer in 60Ni+116Sn probed via γ-particle coincidences. Montanari, D.; Corradi, L.; Szilner, S.; Pollarolo, G.; Goasduff, A.; Mijatović, T.; Bazzacco, D.; Birkenbach, B.; Bracco, A.; Charles, L.; Courtin, S.; Désesquelles, P.; Fioretto, E.; Gadea, A.; Görgen, A.; Gottardo, A.; Grebosz, J.; Haas, F.; Hess, H.; Jelavić Malenica, D.; Jungclaus, A.; Karolak, M.; Leoni, S.; Maj, A.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Montagnoli, G.; Napoli, D. R.; Pullia, A.; Recchia, F.; Reiter, P.; Rosso, D.; Salsac, M. D.; Scarlassara, F.; Söderström, P.-A.; Soić, N.; Stefanini, A. M.; Stezowski, O.; Theisen, Ch.; Ur, C. A.; Valiente-Dobón, J. J.; Varga Pajtler, M. in Phys. Rev. C (2016). 93(5) 054623.
-
Partial cross sections of the 92Mo(p,γ) reaction and the γ strength in 93Tc. Mayer, J.; Goriely, S.; Netterdon, L.; Péru, S.; Scholz, P.; Schwengner, R.; Zilges, A. in Phys. Rev. C (2016). 93(4) 045809.
-
High-spin structure of 134Xe. Vogt, A.; Birkenbach, B.; Reiter, P.; Blazhev, A.; Siciliano, M.; Valiente-Dobón, J. J.; Wheldon, C.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Chakrawarthy, R. S.; Chapman, R.; Cline, D.; Corradi, L.; Crespi, F. C. L.; Cromaz, M.; de Angelis, G.; Eberth, J.; Fallon, P.; Farnea, E.; Fioretto, E.; Freeman, S. J.; Gadea, A.; Geibel, K.; Gelletly, W.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Hayes, A. B.; Hess, H.; Hua, H.; John, P. R.; Jolie, J.; Jungclaus, A.; Korten, W.; Lee, I. Y.; Leoni, S.; Liang, X.; Lunardi, S.; Macchiavelli, A. O.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D.; Pearson, C. J.; Pellegri, L.; Podolyák, Zs.; Pollarolo, G.; Pullia, A.; Radeck, F.; Recchia, F.; Regan, P. H.; Şahin, E.; Scarlassara, F.; Sletten, G.; Smith, J. F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Teng, R.; Ur, C.; Vandone, V.; Ward, D.; Warner, D. D.; Wiens, A.; Wu, C. Y. in Phys. Rev. C (2016). 93(5) 054325.
-
Structure of low-lying states in 140Sm studied by Coulomb excitation. Klintefjord, M.; Hadyńska-Klȩk, K.; Görgen, A.; Bauer, C.; Bello Garrote, F. L.; Bönig, S.; Bounthong, B.; Damyanova, A.; Delaroche, J.-P.; Fedosseev, V.; Fink, D. A.; Giacoppo, F.; Girod, M.; Hoff, P.; Imai, N.; Korten, W.; Larsen, A.-C.; Libert, J.; Lutter, R.; Marsh, B. A.; Molkanov, P. L.; Naïdja, H.; Napiorkowski, P.; Nowacki, F.; Pakarinen, J.; Rapisarda, E.; Reiter, P.; Renstrøm, T.; Rothe, S.; Seliverstov, M. D.; Siebeck, B.; Siem, S.; Srebrny, J.; Stora, T.; Thöle, P.; Tornyi, T. G.; Tveten, G. M.; Van Duppen, P.; Vermeulen, M. J.; Voulot, D.; Warr, N.; Wenander, F.; De Witte, H.; Zielińska, M. in Phys. Rev. C (2016). 93(5) 054303.
-
Spectroscopy of 46Ar by the (t,p) two-neutron transfer reaction. Nowak, K.; Wimmer, K.; Hellgartner, S.; Mücher, D.; Bildstein, V.; Diriken, J.; Elseviers, J.; Gaffney, L. P.; Gernhäuser, R.; Iwanicki, J.; Johansen, J. G.; Huyse, M.; Konki, J.; Kröll, T.; Krücken, R.; Lutter, R.; Orlandi, R.; Pakarinen, J.; Raabe, R.; Reiter, P.; Roger, T.; Schrieder, G.; Seidlitz, M.; Sorlin, O.; Van Duppen, P.; Warr, N.; De Witte, H.; Zielińska, M. in Phys. Rev. C (2016). 93(4) 044335.
-
Pygmy dipole resonance in 140Ce via inelastic scattering of 17O. Krzysiek, M.; Kmiecik, M.; Maj, A.; Bednarczyk, P.; Bracco, A.; Crespi, F. C. L.; Lanza, E. G.; Litvinova, E.; Paar, N.; Avigo, R.; Bazzacco, D.; Benzoni, G.; Birkenbach, B.; Blasi, N.; Bottoni, S.; Brambilla, S.; Camera, F.; Ceruti, S.; Ciemała, M.; de Angelis, G.; Désesquelles, P.; Eberth, J.; Farnea, E.; Gadea, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Grębosz, J.; Hess, H.; Isocarte, R.; Jungclaus, A.; Leoni, S.; Ljungvall, J.; Lunardi, S.; Mazurek, K.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Milion, B.; Morales, A. I.; Napoli, D. R.; Nicolini, R.; Pellegri, L.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Rosso, D.; Salsac, M. D.; Siebeck, B.; Siem, S.; Söderström, P.-A.; Ur, C.; Valiente-Dobon, J. J.; Wieland, O.; Ziębliński, M. in Phys. Rev. C (2016). 93(4) 044330.
-
Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes. Thies, R.; Heinz, A.; Adachi, T.; Aksyutina, Y.; Alcantara-Núñes, J.; Altstadt, S.; Alvarez-Pol, H.; Ashwood, N.; Aumann, T.; Avdeichikov, V.; Barr, M.; Beceiro-Novo, S.; Bemmerer, D.; Benlliure, J.; Bertulani, C. A.; Boretzky, K.; Borge, M. J. G.; Burgunder, G.; Camaño, M.; Caesar, C.; Casarejos, E.; Catford, W.; Cederkäll, J.; Chakraborty, S.; Chartier, M.; Chulkov, L. V.; Cortina-Gil, D.; Crespo, R.; Datta, U.; Díaz Fernández, P.; Dillmann, I.; Elekes, Z.; Enders, J.; Ershova, O.; Estradé, A.; Farinon, F.; Fraile, L. M.; Freer, M.; Freudenberger, M.; Fynbo, H. O. U.; Galaviz, D.; Geissel, H.; Gernhäuser, R.; Göbel, K.; Golubev, P.; Gonzalez Diaz, D.; Hagdahl, J.; Heftrich, T.; Heil, M.; Heine, M.; Henriques, A.; Holl, M.; Ickert, G.; Ignatov, A.; Jakobsson, B.; Johansson, H. T.; Jonson, B.; Kalantar-Nayestanaki, N.; Kanungo, R.; Knöbel, R.; Kröll, T.; Krücken, R.; Kurcewicz, J.; Kurz, N.; Labiche, M.; Langer, C.; Le Bleis, T.; Lemmon, R.; Lepyoshkina, O.; Lindberg, S.; Machado, J.; Marganiec, J.; Maroussov, V.; Mostazo, M.; Movsesyan, A.; Najafi, A.; Nilsson, T.; Nociforo, C.; Panin, V.; Paschalis, S.; Perea, A.; Petri, M.; Pietri, S.; Plag, R.; Prochazka, A.; Rahaman, A.; Rastrepina, G.; Reifarth, R.; Ribeiro, G.; Ricciardi, M. V.; Rigollet, C.; Riisager, K.; Röder, M.; Rossi, D.; Sanchez del Rio, J.; Savran, D.; Scheit, H.; Simon, H.; Sorlin, O.; Stoica, V.; Streicher, B.; Taylor, J. T.; Tengblad, O.; Terashima, S.; Togano, Y.; Uberseder, E.; Van de Walle, J.; Velho, P.; Volkov, V.; Wagner, A.; Wamers, F.; Weick, H.; Weigand, M.; Wheldon, C.; Wilson, G.; Wimmer, C.; Winfield, J. S.; Woods, P.; Yakorev, D.; Zhukov, M. V.; Zilges, A.; Zuber, K. in Phys. Rev. C (2016). 93(5) 054601.
-
Pulse shape analysis and position determination in segmented HPGe detectors: The AGATA detector library. Bruyneel, B.; Birkenbach, B.; Reiter, P. in The European Physical Journal A (2016). 52(3) 70.
The AGATA Detector Library (ADL) was developed for the calculation of signals from highly segmented large volume high-purity germanium (HPGe) detectors. ADL basis sets comprise a huge amount of calculated position-dependent detector pulse shapes. A basis set is needed for Pulse Shape Analysis (PSA). By means of PSA the interaction position of a {\\($} {\backslash}gamma{\$\)} -ray inside the active detector volume is determined. Theoretical concepts of the calculations are introduced and cover the relevant aspects of signal formation in HPGe. The approximations and the realization of the computer code with its input parameters are explained in detail. ADL is a versatile and modular computer code; new detectors can be implemented in this library. Measured position resolutions of the AGATA detectors based on ADL are discussed.
-
Reduced γ–γ time walk to below 50 ps using the multiplexed-start and multiplexed-stop fast-timing technique with LaBr3(Ce) detectors. Régis, J.-M.; Saed-Samii, N.; Rudigier, M.; Ansari, S.; Dannhoff, M.; Esmaylzadeh, A.; Fransen, C.; Gerst, R.-B.; Jolie, J.; Karayonchev, V.; Müller-Gatermann, C.; Stegemann, S. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2016). 823 72 - 82.
Abstract The electronic γ–γ fast-timing technique using arrays consisting of many LaBr3(Ce) detectors is a powerful method to determine lifetimes of nuclear excited states with a lower limit of about 5ps. This method requires the determination of the energy-dependent time walk of the zero time which is represented by the centroid of a prompt γ–γ time distribution. The full-energy peak versus full-energy peak prompt response difference which represents the linearly combined mean γ–γ time walk of a fast-timing array consisting of 8 LaBr3(Ce) detectors was measured using a standard 152Eu γ-ray source for the energy region of 40–1408keV. The data were acquired using a “multiplexed-start and multiplexed-stop” analogue electronics circuitry and analysed by employing the generalized centroid difference method. Concerning the cylindrical 1.5in.×1.5in. LaBr3(Ce) crystals which are coupled to the Hamamatsu R9779 photomultiplier tubes, the best fast-timing array time resolution of 202(3)ps is obtained for the two prompt γ lines of 60Co by using the leading-edge timing principle. When using the zero-crossover timing principle the time resolution is degraded by up to 30%, dependent on the energy and the shaping delay time of the constant fraction discriminator model Ortec 935. The smallest γ–γ time walk to below 50ps is obtained by using a shaping delay time of about 17ns and an optimum “time-walk adjustment” needed for detector output pulses with amplitudes smaller than 400mV.
-
Low-lying isovector 2+ valence-shell excitations of 212Po. Kocheva, D.; Rainovski, G.; Jolie, J.; Pietralla, N.; Stahl, C.; Petkov, P.; Blazhev, A.; Hennig, A.; Astier, A.; Braunroth, Th.; Cortés, M. L.; Dewald, A.; Djongolov, M.; Fransen, C.; Gladnishki, K.; Karayonchev, V.; Litzinger, J.; Müller-Gatermann, C.; Scheck, M.; Scholz, Ph.; Stegmann, R.; Thöle, P.; Werner, V.; Witt, W.; Wölk, D.; Van Isacker, P. in Phys. Rev. C (2016). 93(1) 011303.
-
The decay pattern of the Pygmy Dipole Resonance of 140Ce. Löher, B.; Savran, D.; Aumann, T.; Beller, J.; Bhike, M.; Cooper, N.; Derya, V.; Duchêne, M.; Endres, J.; Hennig, A.; Humby, P.; Isaak, J.; Kelley, J.H.; Knörzer, M.; Pietralla, N.; Ponomarev, V.Yu.; Romig, C.; Scheck, M.; Scheit, H.; Silva, J.; Tonchev, A.P.; Tornow, W.; Wamers, F.; Weller, H.; Werner, V.; Zilges, A. in Physics Letters B (2016). 756 72 - 76.
Abstract The decay properties of the Pygmy Dipole Resonance (PDR) have been investigated in the semi-magic N=82 nucleus 140Ce using a novel combination of nuclear resonance fluorescence and γ–γ coincidence techniques. Branching ratios for transitions to low-lying excited states are determined in a direct and model-independent way both for individual excited states and for excitation energy intervals. Comparison of the experimental results to microscopic calculations in the quasi-particle phonon model exhibits an excellent agreement, supporting the observation that the Pygmy Dipole Resonance couples to the ground state as well as to low-lying excited states. A 10% mixing of the PDR and the [21+×PDR] is extracted.
-
On the time response of background obtained in γ-ray spectroscopy experiments using LaBr3(Ce) detectors with different shielding. Régis, J.-M.; Dannhoff, M.; Jolie, J.; Müller-Gatermann, C.; Saed-Samii, N. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2016). 811 42 - 48.
Abstract Employing the γ-γ fast-timing technique with LaBr3(Ce) scintillator detectors allows the direct determination of lifetimes of nuclear excited states with a lower limit of about 5ps. This limit is increased as soon as background is present in the coincidence spectra underneath the full-energy peaks of the γ-γ cascade. Our aim was to identify the components of the γ-ray background by systematic γ-γ fast-timing measurements using different types of γ shielding within a large γ-ray spectrometer. The energy dependent physical zero-time response was measured using background-free full-energy peak events from the 152Eu γ-ray source. This is compared with the time response of the (Compton-) background distribution as obtained using the prompt 60Co γ-ray source. The time response of the typical Compton background is about 15ps faster than the time response of background-free full-energy peak events. Below about 500keV, a second type of background contributes by the detection of Compton-scattered γ rays generated in the materials of the spectrometer around the detector. Due to the additional time-of-flight of the Compton-scattered γ rays, this low-energy background is largely delayed. Compared with a bare cylindrical 1.5in.×1.5in. LaBr3(Ce) detector, the BGO-shielded detector in the Compton-suppression mode improves the peak-to-total ratio by a factor of 1.66(5), while the Pb-shielded detector only slightly reduces the low-energy background.
-
Collective 2+1 excitations in 206Po and 208,210Rn. Grahn, T.; Pakarinen, J.; Jokiniemi, L.; Albers, M.; Auranen, K.; Bauer, C.; Bernards, C.; Blazhev, A.; Butler, P. A.; Bönig, S.; Damyanova, A.; Coster, T. De; Witte, H. De; Elseviers, J.; Gaffney, L. P.; Huyse, M.; Herzáň, A.; Jakobsson, U.; Julin, R.; Kesteloot, N.; Konki, J.; Kröll, Th.; Lewandowski, L.; Moschner, K.; Peura, P.; Pfeiffer, M.; Radeck, D.; Rahkila, P.; Rapisarda, E.; Reiter, P.; Reynders, K.; Rudiger, M.; Salsac, M. D.; Sambi, S.; Scheck, M.; Seidlitz, M.; Siebeck, B.; Steinbach, T.; Stolze, S.; Suhonen, J.; Thoele, P.; Thürauf, M.; Warr, N.; Duppen, P. Van; Venhart, M.; Vermeulen, M. J.; Werner, V.; Veselsky, M.; Vogt, A.; Wrzosek-Lipska, K.; Zielińska, M. in The European Physical Journal A (2016). 52(11)
-
Superdeformed and Triaxial States in 42Ca. Hadyńska-Klȩk, K.; Napiorkowski, P. J.; Zielińska, M.; Srebrny, J.; Maj, A.; Azaiez, F.; Valiente Dobón, J. J.; Kicińska-Habior, M.; Nowacki, F.; Naïdja, H.; Bounthong, B.; Rodríguez, T. R.; de Angelis, G.; Abraham, T.; Anil Kumar, G.; Bazzacco, D.; Bellato, M.; Bortolato, D.; Bednarczyk, P.; Benzoni, G.; Berti, L.; Birkenbach, B.; Bruyneel, B.; Brambilla, S.; Camera, F.; Chavas, J.; Cederwall, B.; Charles, L.; Ciemała, M.; Cocconi, P.; Coleman-Smith, P.; Colombo, A.; Corsi, A.; Crespi, F. C. L.; Cullen, D. M.; Czermak, A.; Désesquelles, P.; Doherty, D. T.; Dulny, B.; Eberth, J.; Farnea, E.; Fornal, B.; Franchoo, S.; Gadea, A.; Giaz, A.; Gottardo, A.; Grave, X.; Grȩbosz, J.; Görgen, A.; Gulmini, M.; Habermann, T.; Hess, H.; Isocrate, R.; Iwanicki, J.; Jaworski, G.; Judson, D. S.; Jungclaus, A.; Karkour, N.; Kmiecik, M.; Karpiński, D.; Kisieliński, M.; Kondratyev, N.; Korichi, A.; Komorowska, M.; Kowalczyk, M.; Korten, W.; Krzysiek, M.; Lehaut, G.; Leoni, S.; Ljungvall, J.; Lopez-Martens, A.; Lunardi, S.; Maron, G.; Mazurek, K.; Menegazzo, R.; Mengoni, D.; Merchán, E.; Mȩczyński, W.; Michelagnoli, C.; Mierzejewski, J.; Million, B.; Myalski, S.; Napoli, D. R.; Nicolini, R.; Niikura, M.; Obertelli, A.; Özmen, S. F.; Palacz, M.; Próchniak, L.; Pullia, A.; Quintana, B.; Rampazzo, G.; Recchia, F.; Redon, N.; Reiter, P.; Rosso, D.; Rusek, K.; Sahin, E.; Salsac, M.-D.; Söderström, P.-A.; Stefan, I.; Stézowski, O.; Styczeń, J.; Theisen, Ch.; Toniolo, N.; Ur, C. A.; Vandone, V.; Wadsworth, R.; Wasilewska, B.; Wiens, A.; Wood, J. L.; Wrzosek-Lipska, K.; Ziȩbliński, M. in Phys. Rev. Lett. (2016). 117(6) 062501.
-
Magnetic dipole excitations of 50Cr. Pai, H.; Beck, T.; Beller, J.; Beyer, R.; Bhike, M.; Derya, V.; Gayer, U.; Isaak, J.; Krishichayan,; Kvasil, J.; Löher, B.; Nesterenko, V. O.; Pietralla, N.; Martínez-Pinedo, G.; Mertes, L.; Ponomarev, V. Yu.; Reinhard, P.-G.; Repko, A.; Ries, P. C.; Romig, C.; Savran, D.; Schwengner, R.; Tornow, W.; Werner, V.; Wilhelmy, J.; Zilges, A.; Zweidinger, M. in Phys. Rev. C (2016). 93(1) 014318.
-
The pygmy quadrupole resonance and neutron-skin modes in 124Sn. Spieker, M.; Tsoneva, N.; Derya, V.; Endres, J.; Savran, D.; Harakeh, M.N.; Harissopulos, S.; Herzberg, R.-D.; Lagoyannis, A.; Lenske, H.; Pietralla, N.; Popescu, L.; Scheck, M.; Schlüter, F.; Sonnabend, K.; Stoica, V.I.; Wörtche, H.J.; Zilges, A. in Physics Letters B (2016). 752 102 - 107.
Abstract We present an extensive experimental study of the recently predicted pygmy quadrupole resonance (PQR) in Sn isotopes, where complementary probes were used. In this study, (α,α′γ) and (γ,γ′) experiments were performed on 124Sn. In both reactions, Jπ=2+ states below an excitation energy of 5 MeV were populated. The E2 strength integrated over the full transition densities could be extracted from the (γ,γ′) experiment, while the (α,α′γ) experiment at the chosen kinematics strongly favors the excitation of surface modes because of the strong α-particle absorption in the nuclear interior. The excitation of such modes is in accordance with the quadrupole-type oscillation of the neutron skin predicted by a microscopic approach based on self-consistent density functional theory and the quasiparticle-phonon model (QPM). The newly determined γ-decay branching ratios hint at a non-statistical character of the E2 strength, as it has also been recently pointed out for the case of the pygmy dipole resonance (PDR). This allows us to distinguish between PQR-type and multiphonon excitations and, consequently, supports the recent first experimental indications of a PQR in 124Sn.
-
Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei. Werner, V.; Cooper, N.; Régis, J.-M.; Rudigier, M.; Williams, E.; Jolie, J.; Cakirli, R. B.; Casten, R. F.; Ahn, T.; Anagnostatou, V.; Berant, Z.; Bonett-Matiz, M.; Elvers, M.; Heinz, A.; Ilie, G.; Radeck, D.; Savran, D.; Smith, M. K. in Phys. Rev. C (2016). 93(3) 034323.
-
Spectroscopic Quadrupole Moments in 96,98Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60. Clément, E.; Zielińska, M.; Görgen, A.; Korten, W.; Péru, S.; Libert, J.; Goutte, H.; Hilaire, S.; Bastin, B.; Bauer, C.; Blazhev, A.; Bree, N.; Bruyneel, B.; Butler, P. A.; Butterworth, J.; Delahaye, P.; Dijon, A.; Doherty, D. T.; Ekström, A.; Fitzpatrick, C.; Fransen, C.; Georgiev, G.; Gernhäuser, R.; Hess, H.; Iwanicki, J.; Jenkins, D. G.; Larsen, A. C.; Ljungvall, J.; Lutter, R.; Marley, P.; Moschner, K.; Napiorkowski, P. J.; Pakarinen, J.; Petts, A.; Reiter, P.; Renstrøm, T.; Seidlitz, M.; Siebeck, B.; Siem, S.; Sotty, C.; Srebrny, J.; Stefanescu, I.; Tveten, G. M.; Van de Walle, J.; Vermeulen, M.; Voulot, D.; Warr, N.; Wenander, F.; Wiens, A.; De Witte, H.; Wrzosek-Lipska, K in Phys. Rev. Lett. (2016). 116(2) 022701.
-
Role of the Δ Resonance in the Population of a Four-Nucleon State in the 56Fe→54Fe Reaction at Relativistic Energies. Podolyák, Zs.; Shand, C. M.; Lalović, N.; Gerl, J.; Rudolph, D.; Alexander, T.; Boutachkov, P.; Cortés, M. L.; Górska, M.; Kojouharov, I.; Kurz, N.; Louchart, C.; Merchán, E.; Michelagnoli, C.; Pérez-Vidal, R. M.; Pietri, S.; Ralet, D.; Reese, M.; Schaffner, H.; Stahl, Ch.; Weick, H.; Ameil, F.; de Angelis, G.; Arici, T.; Carroll, R.; Dombrádi, Zs.; Gadea, A.; Golubev, P.; Lettmann, M.; Lizarazo, C.; Mahboub, D.; Pai, H.; Patel, Z.; Pietralla, N.; Regan, P. H.; Sarmiento, L. G.; Wieland, O.; Wilson, E.; Birkenbach, B.; Bruyneel, B.; Burrows, I.; Charles, L.; Clément, E.; Crespi, F. C. L.; Cullen, D. M.; Désesquelles, P.; Eberth, J.; González, V.; Habermann, T.; Harkness-Brennan, L.; Hess, H.; Judson, D. S.; Jungclaus, A.; Korten, W.; Labiche, M.; Maj, A.; Mengoni, D.; Napoli, D. R.; Pullia, A.; Quintana, B.; Rainovski, G.; Reiter, P.; Salsac, M. D.; Sanchis, E.; Valiente Dóbon, J. J. in Phys. Rev. Lett. (2016). 117(22) 222302.
-
The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb. Bocchi, G.; Leoni, S.; Fornal, B.; Colò, G.; Bortignon, P.F.; Bottoni, S.; Bracco, A.; Michelagnoli, C.; Bazzacco, D.; Blanc, A.; de France, G.; Jentschel, M.; Köster, U.; Mutti, P.; Régis, J.-M.; Simpson, G.; Soldner, T.; Ur, C.A.; Urban, W.; Fraile, L.M.; Lozeva, R.; Belvito, B.; Benzoni, G.; Bruce, A.; Carroll, R.; Cieplicka-Oryǹczak, N.; Crespi, F.C.L.; Didierjean, F.; Jolie, J.; Korten, W.; Kröll, T.; Lalkovski, S.; Mach, H.; Mărginean, N.; Melon, B.; Mengoni, D.; Million, B.; Nannini, A.; Napoli, D.; Olaizola, B.; Paziy, V.; Podolyák, Zs.; Regan, P.H.; Saed-Samii, N.; Szpak, B.; Vedia, V. in Physics Letters B (2016). 760 273 - 278.
Abstract The γ-ray decay of excited states of the one-valence-proton nucleus 133Sb has been studied using cold-neutron induced fission of 235U and 241Pu targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between γ-rays prompt with the fission event and those delayed up to several tens of microseconds were investigated, allowing to observe, for the first time, high-spin excited states above the 16.6 μs isomer. Lifetimes analysis, performed by fast-timing techniques with LaBr3(Ce) scintillators, revealed a difference of almost two orders of magnitude in B(M1) strength for transitions between positive-parity medium-spin yrast states. The data are interpreted by a newly developed microscopic model which takes into account couplings between core excitations (both collective and non-collective) of the doubly magic nucleus 132Sn and the valence proton, using the Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin.
-
Constraints on the α+nucleus optical-model potential via α-induced reaction studies on 108Cd. Scholz, P.; Heim, F.; Mayer, J.; Münker, C.; Netterdon, L.; Wombacher, F.; Zilges, A. in Physics Letters B (2016). 761 247 - 252.
Abstract A big part in understanding the nucleosynthesis of heavy nuclei is a proper description of the effective interaction between an α-particle and a target nucleus. Information about the so-called α+nucleus optical-model potential is achieved by precise cross-section measurements at sub-Coulomb energies aiming to constrain the theoretical models for the nuclear physics input-parameters. The cross sections of the 108Cd(α,γ) and 108Cd(α,n) reaction have been measured for the first time close to the astrophysically relevant energy region via the in-beam method at the high-efficiency γ-ray spectrometer HORUS and via the activation technique at the Cologne Clover Counting Setup at the Institute for Nuclear Physics in Cologne, Germany. Comparisons between experimental results and theoretical predictions calculated in the scope of the Hauser–Feshbach statistical model confirm the need for a exponentially decreasing imaginary part of the potential. Moreover, it is shown that the results presented here together with already published data indicate that a systematic investigation of the real part of the potential could help to further improve the understanding of reactions involving α-particles.
-
Finite valence nucleon number and rotation-vibration interactions. Casten, R. F.; Jolie, J.; Cakirli, R. B.; Couture, A. in Phys. Rev. C (2016). 94(6) 061303.
-
Low-energy Coulomb excitation of 96,98Sr beams. Clément, E.; Zielińska, M.; Péru, S.; Goutte, H.; Hilaire, S.; Görgen, A.; Korten, W.; Doherty, D. T.; Bastin, B.; Bauer, C.; Blazhev, A.; Bree, N.; Bruyneel, B.; Butler, P. A.; Butterworth, J.; Cederkäll, J.; Delahaye, P.; Dijon, A.; Ekström, A.; Fitzpatrick, C.; Fransen, C.; Georgiev, G.; Gernhäuser, R.; Hess, H.; Iwanicki, J.; Jenkins, D. G.; Larsen, A. C.; Ljungvall, J.; Lutter, R.; Marley, P.; Moschner, K.; Napiorkowski, P. J.; Pakarinen, J.; Petts, A.; Reiter, P.; Renstrøm, T.; Seidlitz, M.; Siebeck, B.; Siem, S.; Sotty, C.; Srebrny, J.; Stefanescu, I.; Tveten, G. M.; Van de Walle, J.; Vermeulen, M.; Voulot, D.; Warr, N.; Wenander, F.; Wiens, A.; De Witte, H.; Wrzosek-Lipska, K. in Phys. Rev. C (2016). 94(5) 054326.
-
γ-ray spectroscopy of 33P and 33S after fusion-evaporation reactions. Fu, B.; Seidlitz, M.; Blazhev, A.; Bouhelal, M.; Haas, F.; Reiter, P.; Arnswald, K.; Birkenbach, B.; Fransen, C.; Friessner, G.; Hennig, A.; Hess, H.; Hirsch, R.; Lewandowski, L.; Schneiders, D.; Siebeck, B.; Steinbach, T.; Thomas, T.; Vogt, A.; Wendt, A.; Wolf, K.; Zell, K. O. in Phys. Rev. C (2016). 94(3) 034318.
-
Low-spin structure of 86Br and 86Kr nuclei: The role of the g7/2 neutron orbital. Urban, W.; Sieja, K.; Materna, T.; Czerwiński, M.; Rząca-Urban, T.; Blanc, A.; Jentschel, M.; Mutti, P.; Köster, U.; Soldner, T.; de France, G.; Simpson, G. S.; Ur, C. A.; Bernards, C.; Fransen, C.; Jolie, J.; Regis, J.-M.; Thomas, T.; Warr, N. in Phys. Rev. C (2016). 94(4) 044328.
-
Precise measurement of energies in 115Sn following the (n,γ) reaction. Urban, W.; Köster, U.; Jentschel, M.; Mutti, P.; Märkisch, B.; Rząca-Urban, T.; Bernards, Ch.; Fransen, Ch.; Jolie, J.; Thomas, T.; Simpson, G. S. in Phys. Rev. C (2016). 94(1) 011302.
-
Transition probabilities in neutron-rich 84,86Se. Litzinger, J.; Blazhev, A.; Dewald, A.; Didierjean, F.; Duchêne, G.; Fransen, C.; Lozeva, R.; Sieja, K.; Verney, D.; de Angelis, G.; Bazzacco, D.; Birkenbach, B.; Bottoni, S.; Bracco, A.; Braunroth, T.; Cederwall, B.; Corradi, L.; Crespi, F. C. L.; Désesquelles, P.; Eberth, J.; Ellinger, E.; Farnea, E.; Fioretto, E.; Gernhäuser, R.; Goasduff, A.; Görgen, A.; Gottardo, A.; Grebosz, J.; Hackstein, M.; Hess, H.; Ibrahim, F.; Jolie, J.; Jungclaus, A.; Kolos, K.; Korten, W.; Leoni, S.; Lunardi, S.; Maj, A.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatovic, T.; Million, B.; Möller, O.; Modamio, V.; Montagnoli, G.; Montanari, D.; Morales, A. I.; Napoli, D. R.; Niikura, M.; Pollarolo, G.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Rosso, D.; Sahin, E.; Salsac, M. D.; Scarlassara, F.; Söderström, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, S.; Theisen, Ch.; Valiente Dobón, J. J.; Vandone, V.; Vogt, A. in Phys. Rev. C (2015). 92(6) 064322.
-
Origin of Low-Lying Enhanced E1 Strength in Rare-Earth Nuclei. Spieker, M.; Pascu, S.; Zilges, A.; Iachello, F. in Phys. Rev. Lett. (2015). 114(19) 192504.
-
Characterization of different surface passivation routes applied to a planar HPGe detector. Maggioni, G.; Napoli, D. R.; Eberth, J.; Gelain, M.; Carturan, S.; Grimaldi, M. G.; Tatì, S. in The European Physical Journal A (2015). 51(11) 141.
The effects of different passivation methods applied to the same planar high-purity germanium gamma radiation detector have been studied. By means of the scanning with a low-energy collimated gamma source, it has been found that the surface passivation gives rise to a dead layer below the intrinsic Ge surface, whose thickness and distribution are strongly dependent on the passivation type. Measured bulk detector properties like the peak-to-Compton ratio and efficiency have shown a dependence on the passivation and an influence of the passivation type on the depletion voltage, whilst the optimal energy resolution has been the same for all the passivations.
-
Spectroscopy of the neutron-rich actinide nucleus 240U following multinucleon-transfer reactions. Birkenbach, B.; Vogt, A.; Geibel, K.; Recchia, F.; Reiter, P.; Valiente-Dobón, J. J.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Corradi, L.; Crespi, F. C. L.; de Angelis, G.; Désesquelles, P.; Eberth, J.; Farnea, E.; Fioretto, E.; Gadea, A.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Grebosz, J.; Hess, H.; John, P. R.; Jolie, J.; Judson, D. S.; Jungclaus, A.; Korten, W.; Lenzi, S.; Leoni, S.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Montagnoli, G.; Montanari, D.; Napoli, D.; Pellegri, L.; Pollarolo, G.; Pullia, A.; Quintana, B.; Radeck, F.; Rosso, D.; Şahin, E.; Salsac, M. D.; Scarlassara, F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szilner, S.; Szpak, B.; Theisen, Ch.; Ur, C.; Vandone, V.; Wiens, A. in Phys. Rev. C (2015). 92(4) 044319.
-
97Rb: The Cornerstone of the Region of Deformation around A∼100. Sotty, C.; Zielińska, M.; Georgiev, G.; Balabanski, D. L.; Stuchbery, A. E.; Blazhev, A.; Bree, N.; Chevrier, R.; Das Gupta, S.; Daugas, J. M.; Davinson, T.; De Witte, H.; Diriken, J.; Gaffney, L. P.; Geibel, K.; Hadyńska-Klȩk, K.; Kondev, F. G.; Konki, J.; Kröll, T.; Morel, P.; Napiorkowski, P.; Pakarinen, J.; Reiter, P.; Scheck, M.; Seidlitz, M.; Siebeck, B.; Simpson, G.; Törnqvist, H.; Warr, N.; Wenander, F. in Phys. Rev. Lett. (2015). 115(17) 172501.
-
Low spin structure of 86Se: Confirmation of γ collectivity at N=52. Materna, T.; Urban, W.; Sieja, K.; Köster, U.; Faust, H.; Czerwiński, M.; Rząca-Urban, T.; Bernards, C.; Fransen, C.; Jolie, J.; Regis, J.-M.; Thomas, T.; Warr, N. in Phys. Rev. C (2015). 92(3) 034305.
-
Partial dynamical symmetry in Bose-Fermi systems. Van Isacker, P.; Jolie, J.; Thomas, T.; Leviatan, A. in Phys. Rev. C (2015). 92(1) 011301.
-
Reduced transition strengths of low-lying yrast states in chromium isotopes in the vicinity of N=40. Braunroth, Thomas; Dewald, A.; Iwasaki, H.; Lenzi, S. M.; Albers, M.; Bader, V. M.; Baugher, T.; Baumann, T.; Bazin, D.; Berryman, J. S.; Fransen, C.; Gade, A.; Ginter, T.; Gottardo, A.; Hackstein, M.; Jolie, J.; Lemasson, A.; Litzinger, J.; Lunardi, S.; Marchi, T.; Modamio, V.; Morse, C.; Napoli, D. R.; Nichols, A.; Recchia, F.; Stroberg, S. R.; Wadsworth, R.; Weisshaar, D.; Whitmore, K.; Wimmer, K. in Phys. Rev. C (2015). 92(3) 034306.
-
Cluster-transfer reactions with radioactive beams: A spectroscopic tool for neutron-rich nuclei. Bottoni, S.; Leoni, S.; Fornal, B.; Raabe, R.; Rusek, K.; Benzoni, G.; Bracco, A.; Crespi, F. C. L.; Morales, A. I.; Bednarczyk, P.; Cieplicka-Oryńczak, N.; Królas, W.; Maj, A.; Szpak, B.; Callens, M.; Bouma, J.; Elseviers, J.; De Witte, H.; Flavigny, F.; Orlandi, R.; Reiter, P.; Seidlitz, M.; Warr, N.; Siebeck, B.; Hellgartner, S.; Mücher, D.; Pakarinen, J.; Vermeulen, M.; Bauer, C.; Georgiev, G.; Janssens, R. V. F.; Balabanski, D.; Sferrazza, M.; Kowalska, M.; Rapisarda, E.; Voulot, D.; Lozano Benito, M.; Wenander, F. in Phys. Rev. C (2015). 92(2) 024322.
-
Light and heavy transfer products in 136Xe+238U multinucleon transfer reactions. Vogt, A.; Birkenbach, B.; Reiter, P.; Corradi, L.; Mijatović, T.; Montanari, D.; Szilner, S.; Bazzacco, D.; Bowry, M.; Bracco, A.; Bruyneel, B.; Crespi, F. C. L.; de Angelis, G.; Désesquelles, P.; Eberth, J.; Farnea, E.; Fioretto, E.; Gadea, A.; Geibel, K.; Gengelbach, A.; Giaz, A.; Görgen, A.; Gottardo, A.; Grebosz, J.; Hess, H.; John, P. R.; Jolie, J.; Judson, D. S.; Jungclaus, A.; Korten, W.; Leoni, S.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Montagnoli, G.; Napoli, D.; Pellegri, L.; Pollarolo, G.; Pullia, A.; Quintana, B.; Radeck, F.; Recchia, F.; Rosso, D.; Şahin, E.; Salsac, M. D.; Scarlassara, F.; Söderström, P.-A.; Stefanini, A. M.; Steinbach, T.; Stezowski, O.; Szpak, B.; Theisen, Ch.; Ur, C.; Valiente-Dobón, J. J.; Vandone, V.; Wiens, A. in Phys. Rev. C (2015). 92(2) 024619.
-
Testing refined shell-model interactions in the sd shell: Coulomb excitation of 26Na. Siebeck, B.; Seidlitz, M.; Blazhev, A.; Reiter, P.; Altenkirch, R.; Bauer, C.; Butler, P. A.; De Witte, H.; Elseviers, J.; Gaffney, L. P.; Hess, H.; Huyse, M.; Kröll, T.; Lutter, R.; Pakarinen, J.; Pietralla, N.; Radeck, F.; Scheck, M.; Schneiders, D.; Sotty, C.; Van Duppen, P.; Vermeulen, M.; Voulot, D.; Warr, N.; Wenander, F. in Phys. Rev. C (2015). 91(1) 014311.
-
Lifetime measurement of excited low-spin states via the (p,p′γ) reaction. Hennig, A.; Derya, V.; Mineva, M.N.; Petkov, P.; Pickstone, S.G.; Spieker, M.; Zilges, A. in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2015). 794 171 - 176.
Abstract In this paper a method for lifetime measurements in the sub-picosecond regime via the Doppler-shift attenuation method (DSAM) following the inelastic proton scattering reaction is presented. In a pioneering experiment we extracted the lifetimes of 30 excited low-spin states of 96Ru, taking advantage of the coincident detection of scattered protons and de-exciting γ-rays as well as the large number of particle and γ-ray detectors provided by the SONIC@HORUS setup at the University of Cologne. The large amount of new experimental data shows that this technique is suited for the measurement of lifetimes of excited low-spin states, especially for isotopes with a low isotopic abundance, where (n,n′γ) or – in case of investigating dipole excitations – (γ,γ′) experiments are not feasible due to the lack of sufficient isotopically enriched target material.
-
Experimental study of the 66Ni(d,p) 67Ni one-neutron transfer reaction. Diriken, J.; Patronis, N.; Andreyev, A.; Antalic, S.; Bildstein, V.; Blazhev, A.; Darby, I. G.; De Witte, H.; Eberth, J.; Elseviers, J.; Fedosseev, V. N.; Flavigny, F.; Fransen, Ch.; Georgiev, G.; Gernhauser, R.; Hess, H.; Huyse, M.; Jolie, J.; Kröll, Th.; Krücken, R.; Lutter, R.; Marsh, B. A.; Mertzimekis, T.; Muecher, D.; Orlandi, R.; Pakou, A.; Raabe, R.; Randisi, G.; Reiter, P.; Roger, T.; Seidlitz, M.; Seliverstov, M.; Sotty, C.; Tornqvist, H.; Van De Walle, J.; Van Duppen, P.; Voulot, D.; Warr, N.; Wenander, F.; Wimmer, K. in Phys. Rev. C (2015). 91(5) 054321.
-
Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2;2+1→0+1) value of 142Sm. Stegmann, R.; Bauer, C.; Rainovski, G.; Pietralla, N.; Stahl, C.; Bönig, S.; Ilieva, S.; Blazhev, A.; Damyanova, A.; Danchev, M.; Gladnishki, K.; Jolie, J.; Lutter, R.; Pakarinen, J.; Radeck, D.; Rapisarda, E.; Reiter, P.; Scheck, M.; Siebeck, B.; Stora, T.; Thöle, P.; Thomas, T.; Thürauf, M.; Vermeulen, M. J.; Voulot, D.; Warr, N.; Wenander, F.; Werner, V.; De Witte, H. in Phys. Rev. C (2015). 91(5) 054326.
-
Experimental constraints on the γ-ray strength function in 90Zr using partial cross sections of the Y89(p,γ)Zr90 reaction. Netterdon, L.; Endres, A.; Goriely, S.; Mayer, J.; Scholz, P.; Spieker, M.; Zilges, A. in Physics Letters B (2015). 744 358 - 362.
Abstract Partial cross sections of the Y89(p,γ)Zr90 reaction have been measured to investigate the γ-ray strength function in the neutron–magic nucleus 90Zr. For five proton energies between Ep=3.65 MeV and Ep=4.70 MeV, partial cross sections for the population of seven discrete states in 90Zr have been determined by means of in-beam γ-ray spectroscopy. Since these γ-ray transitions are dominantly of E1 character, the present measurement allows an access to the low-lying dipole strength in 90Zr. A γ-ray strength function based on the experimental data could be extracted, which is used to describe the total and partial cross sections of this reaction by Hauser–Feshbach calculations successfully. Significant differences with respect to previously measured strength functions from photoabsorption data point towards deviations from the Brink–Axel hypothesis relating the photo-excitation and de-excitation strength functions.
-
Collective excitations of 96Ru by means of (p,p′γ) experiments. Hennig, A.; Ahn, T.; Anagnostatou, V.; Blazhev, A.; Cooper, N.; Derya, V.; Elvers, M.; Endres, J.; Goddard, P.; Heinz, A.; Hughes, R. O.; Ilie, G.; Mineva, M. N.; Petkov, P.; Pickstone, S. G.; Pietralla, N.; Radeck, D.; Ross, T. J.; Savran, D.; Spieker, M.; Werner, V.; Zilges, A. in Phys. Rev. C (2015). 92(6) 064317.
-
Detailed spectroscopy of quadrupole and octupole states in 168Yb. Pascu, S.; Bucurescu, D.; Căta-Danil, Gh.; Derya, V.; Elvers, M.; Filipescu, D.; Ghiţă, D. G.; Glodariu, T.; Hennig, A.; Mihai, C.; Mărginean, N.; Mărginean, R.; Negret, A.; Netterdon, L.; Pickstone, S. G.; Sava, T.; Spieker, M.; Stroe, L.; Zamfir, N. V.; Zilges, A. in Phys. Rev. C (2015). 91(3) 034321.
-
Total and partial cross sections of the 112Sn(α,γ)116Te reaction measured via in-beam γ-ray spectroscopy. Netterdon, L.; Mayer, J.; Scholz, P.; Zilges, A. in Phys. Rev. C (2015). 91(3) 035801.
-
Test of the SO(6) selection rule in 196Pt using cold-neutron capture. Jolie, J.; Régis, J.-M.; Wilmsen, D.; Saed-Samii, N.; Pfeiffer, M.; Warr, N.; Blanc, A.; Jentschel, M.; Köster, U.; Mutti, P.; Soldner, T.; Simpson, G.S.; France, G. De; Urban, W.; Drouet, F.; Vancraeyenest, A.; Bruce, A.M.; Roberts, O.J.; Fraile, L.M.; Paziy, V.; Ignatov, A.; Kröll, Th.; Ivanova, D.; Kisyov, S.; Lalkovski, S.; Podolyak, Zs.; Regan, P.H.; Wilson, E.; Korten, W.; Ur, C.A.; Lica, R.; Marginean, N. in Nuclear Physics A (2015). 934 1 - 7.
Abstract At the PF1B cold-neutron beam line of the Institut Laue Langevin, the EXILL&FATIMA array, consisting of EXOGAM Ge detectors and fast LaBr3(Ce) scintillators, was used to perform fast electronic timing measurements after the 195Pt(n, γ) reaction using a highly collimated cold-neutron beam. An upper lifetime limit was obtained for the third 0+ state in 196Pt. As this state is the lowest state of the σ=N−2 set of SO(6) states, the selection rule which forbids E2 transitions to the lower lying σ=N could be tested.
-
Shell evolution beyond N=40: 69,71,73Cu. Sahin, E.; Doncel, M.; Sieja, K.; de Angelis, G.; Gadea, A.; Quintana, B.; Görgen, A.; Modamio, V.; Mengoni, D.; Valiente-Dobón, J. J.; John, P. R.; Albers, M.; Bazzacco, D.; Benzoni, G.; Birkenbach, B.; Cederwall, B.; Clément, E.; Curien, D.; Corradi, L.; Désesquelles, P.; Dewald, A.; Didierjean, F.; Duchêne, G.; Eberth, J.; Erduran, M. N.; Farnea, E.; Fioretto, E.; de France, G.; Fransen, C.; Gernhäuser, R.; Gottardo, A.; Hackstein, M.; Hagen, T.; Hernández-Prieto, A.; Hess, H.; Hüyük, T.; Jungclaus, A.; Klupp, S.; Korten, W.; Kusoglu, A.; Lenzi, S. M.; Ljungvall, J.; Louchart, C.; Lunardi, S.; Menegazzo, R.; Michelagnoli, C.; Mijatović, T.; Million, B.; Molini, P.; Montagnoli, G.; Montanari, D.; Möller, O.; Napoli, D. R.; Obertelli, A.; Orlandi, R.; Pollarolo, G.; Pullia, A.; Recchia, F.; Reiter, P.; Rosso, D.; Rother, W.; Salsac, M.-D.; Scarlassara, F.; Schlarb, M.; Siem, S.; Singh, Pushpendra P.; Söderström, P.-A.; Stefanini, A. M.; Stézowski, O.; Sulignano, B.; Szilner, S.; Theisen, Ch.; Ur, C. A.; Yalcinkaya, M. in Phys. Rev. C (2015). 91(3) 034302.
-
Collectivity in the light radon nuclei measured directly via Coulomb excitation. Gaffney, L. P.; Robinson, A. P.; Jenkins, D. G.; Andreyev, A. N.; Bender, M.; Blazhev, A.; Bree, N.; Bruyneel, B.; Butler, P. A.; Cocolios, T. E.; Davinson, T.; Deacon, A. N.; De Witte, H.; DiJulio, D.; Diriken, J.; Ekström, A.; Fransen, Ch.; Freeman, S. J.; Geibel, K.; Grahn, T.; Hadinia, B.; Hass, M.; Heenen, P.-H.; Hess, H.; Huyse, M.; Jakobsson, U.; Kesteloot, N.; Konki, J.; Kröll, Th.; Kumar, V.; Ivanov, O.; Martin-Haugh, S.; Mücher, D.; Orlandi, R.; Pakarinen, J.; Petts, A.; Peura, P.; Rahkila, P.; Reiter, P.; Scheck, M.; Seidlitz, M.; Singh, K.; Smith, J. F.; Van de Walle, J.; Van Duppen, P.; Voulot, D.; Wadsworth, R.; Warr, N.; Wenander, F.; Wimmer, K.; Wrzosek-Lipska, K.; Zielińska, M. in Phys. Rev. C (2015). 91(6) 064313.
-
1− and 2+ discrete states in 90Zr populated via the (17O,17O′γ) reaction. Crespi, F. C. L.; Bracco, A.; Nicolini, R.; Lanza, E. G.; Vitturi, A.; Mengoni, D.; Leoni, S.; Benzoni, G.; Blasi, N.; Boiano, C.; Bottoni, S.; Brambilla, S.; Camera, F.; Corsi, A.; Giaz, A.; Million, B.; Pellegri, L.; Vandone, V.; Wieland, O.; Bednarczyk, P.; Ciemała, M.; Kmiecik, M.; Krzysiek, M.; Maj, A.; Bazzacco, D.; Bellato, M.; Birkenbach, B.; Bortolato, D.; Calore, E.; Cederwall, B.; de Angelis, G.; Désesquelles, P.; Eberth, J.; Farnea, E.; Gadea, A.; Görgen, A.; Gottardo, A.; Hess, H.; Isocrate, R.; Jolie, J.; Jungclaus, A.; Kempley, R. S.; Labiche, M.; Menegazzo, R.; Michelagnoli, C.; Molini, P.; Napoli, D. R.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Sahin, E.; Siem, S.; Söderström, P.-A.; Stezowski, O.; Theisen, Ch.; Ur, C.; Valiente-Dobón, J. J. in Phys. Rev. C (2015). 91(2) 024323.
-
Single-neutron orbits near 78Ni: Spectroscopy of the N=49 isotope 79Zn. Orlandi, R.; Mücher, D.; Raabe, R.; Jungclaus, A.; Pain, S.D.; Bildstein, V.; Chapman, R.; de Angelis, G.; Johansen, J.G.; Duppen, P. Van; Andreyev, A.N.; Bottoni, S.; Cocolios, T.E.; Witte, H. De; Diriken, J.; Elseviers, J.; Flavigny, F.; Gaffney, L.P.; Gernhäuser, R.; Gottardo, A.; Huyse, M.; Illana, A.; Konki, J.; Kröll, T.; Krücken, R.; Lane, J.F.W.; Liberati, V.; Marsh, B.; Nowak, K.; Nowacki, F.; Pakarinen, J.; Rapisarda, E.; Recchia, F.; Reiter, P.; Roger, T.; Sahin, E.; Seidlitz, M.; Sieja, K.; Smith, J.F.; Dobón, J.J. Valiente; von Schmid, M.; Voulot, D.; Warr, N.; Wenander, F.K.; Wimmer, K. in Physics Letters B (2015). 740 298 - 302.
Abstract Single-neutron states in the Z=30, N=49 isotope 79Zn have been populated using the 78Zn(d, p)79Zn transfer reaction at REX-ISOLDE, CERN. The experimental setup allowed the combined detection of protons ejected in the reaction, and of γ rays emitted by 79Zn. The analysis reveals that the lowest excited states populated in the reaction lie at approximately 1 MeV of excitation, and involve neutron orbits above the N=50 shell gap. From the analysis of γ-ray data and of proton angular distributions, characteristic of the amount of angular momentum transferred, a 5/2+ configuration was assigned to a state at 983 keV. Comparison with large-scale-shell-model calculations supports a robust neutron N=50 shell-closure for 78Ni. These data constitute an important step towards the understanding of the magicity of 78Ni and of the structure of nuclei in the region.
-
Perspectives for photonuclear research at the Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility. Filipescu, D.; Anzalone, A.; Balabanski, D. L.; Belyshev, S. S.; Camera, F.; La Cognata, M.; Constantin, P.; Csige, L.; Cuong, P. V.; Cwiok, M.; Derya, V.; Dominik, W.; Gai, M.; Gales, S.; Gheorghe, I.; Ishkhanov, B. S.; Krasznahorkay, A.; Kuznetsov, A. A.; Mazzocchi, C.; Orlin, V. N.; Pietralla, N.; Sin, M.; Spitaleri, C.; Stopani, K. A.; Tesileanu, O.; Ur, C. A.; Ursu, I.; Utsunomiya, H.; Varlamov, V. V.; Weller, H. R.; Zamfir, N. V.; Zilges, A. in The European Physical Journal A (2015). 51(12) 185.
The perspectives for photonuclear experiments at the new Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility are discussed in view of the need to accumulate novel and more precise nuclear data. The parameters of the ELI-NP gamma beam system are presented. The emerging experimental program, which will be realized at ELI-NP, is presented. Examples of day-one experiments with the nuclear resonance fluorescence technique, photonuclear reaction measurements, photofission experiments and studies of nuclear collective excitation modes and competition between various decay channels are discussed. The advantages which ELI-NP provides for all these experiments compared to the existing facilities are discussed.
-
A dedicated {AMS} setup for 53Mn/60Fe at the Cologne {FN} tandem accelerator. Schiffer, M.; Dewald, A.; Feuerstein, C.; Altenkirch, R.; Stolz, A.; Heinze, S. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (2015). 361 95--99.
-
Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes. Kesteloot, N.; Bastin, B.; Gaffney, L. P.; Wrzosek-Lipska, K.; Auranen, K.; Bauer, C.; Bender, M.; Bildstein, V.; Blazhev, A.; Bönig, S.; Bree, N.; Clément, E.; Cocolios, T. E.; Damyanova, A.; Darby, I.; De Witte, H.; Di Julio, D.; Diriken, J.; Fransen, C.; García-Ramos, J. E.; Gernhäuser, R.; Grahn, T.; Heenen, P.-H.; Hess, H.; Heyde, K.; Huyse, M.; Iwanicki, J.; Jakobsson, U.; Konki, J.; Kröll, T.; Laurent, B.; Lecesne, N.; Lutter, R.; Pakarinen, J.; Peura, P.; Piselli, E.; Próchniak, L.; Rahkila, P.; Rapisarda, E.; Reiter, P.; Scheck, M.; Seidlitz, M.; Sferrazza, M.; Siebeck, B.; Sjodin, M.; Tornqvist, H.; Traykov, E.; Van De Walle, J.; Van Duppen, P.; Vermeulen, M.; Voulot, D.; Warr, N.; Wenander, F.; Wimmer, K.; Zielińska, M. in Phys. Rev. C (2015). 92(5) 054301.
-
Key Nuclear Reaction Experiments Schieck, Hans Paetz gen. in 2053-2563 (2015). IOP Publishing.
In this book the author charts the developments in nuclear physics since its inception around a century ago by reviewing the key experiments that helped drive and shape our understanding of the field, especially in the context of the wider developments in physics in the early 20th century. In addition to providing a path through the field and the crucial events it looks at how these experiments not only answered key questions at the time but presented new challenges to the contemporary perception of the nuclear and sub-atomic worlds and how they helped develop our present understanding of nuclear physics.
-
Isospin Mixing in 80Zr: From Finite to Zero Temperature. Ceruti, S.; Camera, F.; Bracco, A.; Avigo, R.; Benzoni, G.; Blasi, N.; Bocchi, G.; Bottoni, S.; Brambilla, S.; Crespi, F. C. L.; Giaz, A.; Leoni, S.; Mentana, A.; Million, B.; Morales, A. I.; Nicolini, R.; Pellegri, L.; Pullia, A.; Riboldi, S.; Wieland, O.; Birkenbach, B.; Bazzacco, D.; Ciemala, M.; Désesquelles, P.; Eberth, J.; Farnea, E.; Görgen, A.; Gottardo, A.; Hess, H.; Judson, D. S.; Jungclaus, A.; Kmiecik, M.; Korten, W.; Maj, A.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Modamio, V.; Montanari, D.; Myalski, S.; Napoli, D.; Quintana, B.; Reiter, P.; Recchia, F.; Rosso, D.; Sahin, E.; Salsac, M. D.; Söderström, P.-A.; Stezowski, O.; Theisen, Ch.; Ur, C.; Valiente-Dobón, J. J.; Zieblinski, M. in Phys. Rev. Lett. (2015). 115(22) 222502.
-
Production of Hyperpolarized H2 Molecules from →H Atoms in Gas-Storage Cells. Engels, R.; Gaißer, M.; Gorski, R.; Grigoryev, K.; Mikirtychyants, M.; Nass, A.; Rathmann, F.; Seyfarth, H.; Ströher, H.; Weiss, P.; Kochenda, L.; Kravtsov, P.; Trofimov, V.; Tschernov, N.; Vasilyev, A.; Vznuzdaev, M.; Schieck, H. Paetz gen. in Phys. Rev. Lett. (2015). 115(11) 113007.
-
Population of the 2+ms mixed-symmetry state of 140Ba with the α-transfer reaction. Stahl, C.; Leske, J.; Bauer, C.; Bazzacco, D.; Farnea, E.; Gottardo, A.; John, P. R.; Michelagnoli, C.; Pietralla, N.; Reese, M.; Şahin, E.; Birkenbach, B.; Bracco, A.; Crespi, F. C. L.; de Angelis, G.; Désesquelles, P.; Eberth, J.; Gadea, A.; Görgen, A.; Grebosz, J.; Hess, H.; Jolie, J.; Jungclaus, A.; Korten, W.; Lenzi, S. M.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Modamio, V.; Napoli, D. R.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Rosso, D.; Salsac, M. D.; Söderström, P.-A.; Stezowski, O.; Theisen, Ch.; Ur, C. A.; Valiente-Dobón, J. J. in Phys. Rev. C (2015). 92(4) 044324.