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1. Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag

Author

Hirofumi Watanabe, Young-Ki Kim, Chang-Bum Moon, A. Jungclaus, Younghun Kwon, A. Montaner-Pizá, Anna Wendt, Shunji Nishimura, Hiroshi Suzuki, F. Naqvi, Megumi Niikura, K. Yoshinaga, Ayumi Yagi, Z. H. Li, G. J. Lane, Giuseppe Lorusso, Hyo Soon Jung, F. Browne, D. Kameda, Hiroki Nishibata, Gary Simpson, P. Doornenbal, K. Steiger, Guillaume Gey, T. Isobe, F. G. Kondev, I. Kojouharov, Toshiyuki Sumikama, Zs. Vajta, R. Orlandi, Toshiyuki Kubo, Hiroyuki Takeda, Naohito Inabe, Atsuko Odahara, Jin Wu, G. D. Kim, H.K. Wang, Jan Taprogge, Roman Gernhäuser, G. Benzoni, F. C. L. Crespi, H. Schaffner, K. Moschner, H. Baba, Naoki Fukuda, Zs. Podolyák, K. Y. Chae, N. Kurz, Zhengyu Xu, P. A. Söderström, Daiki Nishimura, Hiroyoshi Sakurai, Zena Patel, Cenxi Yuan, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Ministry of Science and Technology (South Korea), Department of Energy (US), National Research Foundation of Korea, Ministerio de Economía y Competitividad (España), Federal Ministry of Education and Research (Germany), Japan Society for the Promotion of Science, National Natural Science Foundation of China, National Key Research and Development Program (China), and Science and Technology Facilities Council (UK)

Subjects
Nuclear and High Energy Physics, QC1-999, Nuclear Theory, Shell (structure), Shell evolution, Ag, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, decay, Gamow-Teller, 0103 physical sciences, medicine, Physics::Atomic and Molecular Clusters, Neutron, 010306 general physics, Spin (physics), Physics, 010308 nuclear & particles physics, Gamow-Teller β decay, Parity (physics), 127Ag, ddc, Isomer, medicine.anatomical_structure, 13. Climate action, Atomic nucleus, 127 Ag, Atomic physics, Radioactive isotope beam, Nucleus, Excitation
Abstract

6 pags., 4 figs., 2 tabs., The change of the shell structure in atomic nuclei, so-called “nuclear shell evolution”, occurs due to changes of major configurations through particle-hole excitations inside one nucleus, as well as due to variation of the number of constituent protons or neutrons. We have investigated how the shell evolution affects Gamow-Teller (GT) transitions that dominate the β decay in the region below 132Sn using the newly obtained experimental data on a long-lived isomer in 127Ag. The T1/2=67.5(9) ms isomer has been identified with a spin and parity of (27/2+) at an excitation energy of 1942−20+14 keV, and found to decay via an internal transition of an E3 character, which competes with the dominant β-decay branches towards the high-spin states in 127Cd. The underlying mechanism of a strong GT transition from the 127Ag isomer is discussed in terms of configuration-dependent optimization of the effective single-particle energies in the framework of a shell-model approach., Part of the WAS3ABi was supported by the Rare Isotope Science Project which is funded by MSIP and NRF of Korea. This work was supported by the Priority Centers Research Program in Korea (2009-0093817), OTKA contract number K100835, the U.S. DOE, Office of Nuclear Physics (Contract No. DE-AC02-06CH11357), NRF2016R1A5A1013277 and NRF-2013M7A1A1075764, the Spanish Ministerio de Economía y Competitividad under contract FPA2017- 84756-C4-2-P, the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011-IEF (Contract No. 300096), German BMBF under Contract No: 05P12PKFNE, JSPS KAKENHI Grant No. 24740188 and 25247045, the National Natural Science Foundation of China (Nos. 11505302, 11575112, 11775316), the National Key Program for S&T Research and Development (No. 2016YFA0400501), and STFC (UK).

Published
2021

2. Determination of beta-delayed neutron emission probability limits of rhodium isotopes by gamma-ray spectroscopy

Author

Shunji Nishimura, Naohito Inabe, Roman Gernhäuser, A. Boso, Z. H. Li, T. Isobe, Toshiyuki Kubo, H. Baba, F. G. Kondev, H. Schaffner, Megumi Niikura, Gary Simpson, G. Benzoni, F. C. L. Crespi, Hirofumi Watanabe, Zs. Vajta, Anna Wendt, Y. Shimizu, Atsuko Odahara, Jinguang Wu, A. Jungclaus, Hiroyoshi Sakurai, Hiroshi Suzuki, R. Orlandi, I. Kajouharov, Hyo Soon Jung, Zhengyu Xu, F. Browne, K. Yoshinaga, Jan Taprogge, Toshiyuki Sumikama, Guillaume Gey, Hiroyuki Takeda, P. H. Regan, G. J. Lane, Giuseppe Lorusso, Zena Patel, G. D. Kim, K. Moschner, S. Shibagaki, Bradley S. Meyer, R. Shearman, F. Naqvi, D. Kameda, Ayumi Yagi, P. Doornenbal, P. Schury, K. Steiger, Toshitaka Kajino, Young-Ki Kim, P. A. Söderström, Younghun Kwon, A. Montaner-Pizá, K. Y. Chae, N. Kurz, Naoki Fukuda, Zs. Podolyák, Hiroki Nishibata, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Science and Technology Facilities Council (UK), Department for Business, Energy and Industrial Strategy (UK), National Measurement System (UK), and Department of Energy (US)

Subjects
Paper, History, Fission, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Education, Nuclear physics, 0103 physical sciences, Gamma spectroscopy, Nuclear drip line, Nuclide, 010306 general physics, Nuclear Experiment, Physics, Isotope, 010308 nuclear & particles physics, 3. Good health, Computer Science Applications, ddc, chemistry, Physics::Accelerator Physics, Beryllium, Delayed neutron
Abstract

9 pags., 5 figs., 5 tabs. -- 27th International Nuclear Physics Conference (INPC2019) 29 July - 2 August 2019, Glasgow, UK, The decay of five neutron-heavy rhodium isotopes were studied at the Radioactive Isotope Beam Factory (RIBF) Facility at the RIKEN Nishina Center after relativistic fission of 238U beam on a thick beryllium target. Previously unknown associated gamma-ray decay energies are reported for each nuclide, and through evaluating the intensity of the 2+ → 0+ E2 transition in the even-even palladium daughter nuclei, 120,122,124Pd, from the beta-tagged gamma-ray spectra an upper or lower limit of beta-delayed neutron emission is deduced for each nuclei. A general, expected trend of increasing Pn is observed in the direction of the neutron drip line., This work was partially supported by the STFC UK (grant numbers ST/L005743/1 and ST/P005314) and UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System. RS thanks the Nuclear Decommissioning Authority (NDA) for the award of an NDA Bursary. FGK acknowledges funding by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357.

Published
2019

3. New isomers in $^{125}$Pd$_{79}$ and $^{127}$Pd$_{81}$: Competing proton and neutron excitations in neutron-rich palladium nuclides towards the $N = 82$ shell closure

Author

Gary Simpson, Naohito Inabe, Hirofumi Watanabe, G. D. Kim, Chang-Bum Moon, A. Jungclaus, Ayumi Yagi, Megumi Niikura, Toshiyuki Sumikama, T. Isobe, Hiroshi Suzuki, Toshiyuki Kubo, Hyo Soon Jung, Shunji Nishimura, Hiroyuki Takeda, Atsuko Odahara, Jan Taprogge, G. Benzoni, F. C. L. Crespi, K. Yoshinaga, H. Baba, G. J. Lane, Giuseppe Lorusso, F. Browne, F. G. Kondev, I. Kojouharov, Guillaume Gey, H.K. Wang, Roman Gernhäuser, R. Orlandi, Z. H. Li, Hiroki Nishibata, Anna Wendt, H. Schaffner, Zs. Vajta, Zhengyu Xu, Young-Ki Kim, Younghun Kwon, A. Montaner-Pizá, Hiroyoshi Sakurai, Zena Patel, Daiki Nishimura, Yang Sun, Jin Wu, K. Moschner, K. Steiger, Naoki Fukuda, D. Kameda, Zs. Podolyák, P. A. Söderström, P. Doornenbal, F. Naqvi, K. Y. Chae, N. Kurz, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Proton, 010308 nuclear & particles physics, Fission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, lcsh:QC1-999, chemistry, Nucleosynthesis, Excited state, 0103 physical sciences, Neutron, Nuclide, Atomic physics, 010306 general physics, Nuclear Experiment, lcsh:Physics, Palladium
Abstract

The neutron-rich isotopes of palladium have attracted considerable interest in terms of the evolution of the N=82 neutron shell closure and its influence on the r-process nucleosynthesis. In this Letter, we present the first spectroscopic information on the excited states in Pd and Pd studied using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity U beam at the RIBF facility. New isomeric states with half-lives of 144(4) ns and 39(6) μs have been assigned spins and parities of (23/2 ) and (19/2 ) in Pd and Pd, respectively. The observed level properties are compared to a shell-model calculation, suggesting the competition between proton excitations and neutron excitations in the proton-hole and neutron-hole systems in the vicinity of the doubly magic nucleus Sn.

Published
2019

4. Observation of a $\gamma$-decaying millisecond isomeric state in $^{128}$Cd$_{80}$

Author

I. Kojouharov, Jan Taprogge, S. Ilieva, K. Moschner, A. Gargano, Hyo Soon Jung, Zhengyu Xu, P. A. Söderström, L. Coraggio, F. Naqvi, Ayumi Yagi, G. Benzoni, S. Bönig, Shunji Nishimura, Toshiyuki Sumikama, K. Yoshinaga, Zs. Vajta, Zena Patel, A. Jungclaus, Hiroyoshi Sakurai, Z. H. Li, G. D. Kim, F. Drouet, H. Grawe, N. Kurz, Hiroyuki Takeda, Young-Ki Kim, J. M. Daugas, T. Kröll, Younghun Kwon, F. Browne, G. J. Lane, Giuseppe Lorusso, A. Montaner-Pizá, R. Orlandi, H. Baba, H. Schaffner, Hiroshi Suzuki, Megumi Niikura, Nunzio Itaco, T. Isobe, D. Kameda, D. Mücher, Atsuko Odahara, F. G. Kondev, Guillaume Gey, Naoki Fukuda, P. Doornenbal, Hiroshi Watanabe, Zs. Podolyák, Jin Wu, K. Steiger, Hiroki Nishibata, Anna Wendt, K. Y. Chae, Naohito Inabe, Y. Shimizu, Gary Simpson, Toshiyuki Kubo, A. Gadea, Roman Gernhäuser, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut Laue-Langevin (ILL), ILL, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Hungarian Scientific Research Fund, European Commission, Department of Energy (US), Science and Technology Facilities Council (UK), Federal Ministry of Education and Research (Germany), Helmholtz International Center for FAIR, German Research Foundation, SCOAP, National Research Foundation of Korea, Generalitat Valenciana, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia e Innovación (España), RIKEN Nishina Center for Accelerator-Based Science, Japan Society for the Promotion of Science, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Sã¶derstrã¶m, P. -. A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhã¤user, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -. K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Z. S., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bã¶nig, S., Chae, K. Y., Coraggio, L., Daugas, J. -. M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Krã¶ll, T., Lane, G. J., Montaner-pizã¡, A., Moschner, K., Mã¼cher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyã¡k, Z. S., and Wendt, A.

Subjects
Shell model calculation, Nuclear and High Energy Physics, Fission, SHELL model, Nuclear Theory, Shell model calculations, Transition strengths, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, 0103 physical sciences, medicine, ddc:530, 010306 general physics, Nuclear Experiment, Physics, Millisecond, Radionuclide, Isomeric decay, 010308 nuclear & particles physics, Projectile, Parity (physics), lcsh:QC1-999, medicine.anatomical_structure, Isomeric decays, Physics::Accelerator Physics, Transition strength, Atomic physics, Nucleus, lcsh:Physics
Abstract

A. Jungclaus et al. -- 6 pags., 5 figs., 2 tabs. -- Open Access funded by Creative Commons Atribution Licence 4.0, A new high-spin isomer in the neutron-rich nucleus Cd was populated in the projectile fission of a U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus Cd. In the present experiment no evidence was found for the decay of a 18 E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h and the 0g orbit, respectively, which is predicted to exist by the shell model., We thank the staff of the RIKEN Nishina Center accelerator complex for providing stable beams with high intensities to the experiment. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the Spanish Ministerio de Ciencia e Innovación under contract FPA2011-29854-C04 and the Spanish Ministerio de Economía y Competitividad under contract FPA2014-57196-C5-4-P, the Generalitat Valenciana (Spain) under grant PROMETEO/2010/101, the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (NRF-2014S1A2A2028636, 2016K1A3A7A09005579, 2016R1A5A1013277), the Priority Centers Research Program in Korea (2009-0093817), OTKA contract number K-100835, JSPS KAKENHI (Grant No. 25247045), the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011-IEF under Contract No. 300096, the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357, the STFC (UK), the “RIKEN foreign research program”, the German BMBF (No. 05P12RDCIA, 05P12RDNUP and 05P12PKFNE), HIC for FAIR, the DFG cluster of excellence “Origin and Structure of the Universe” and DFG (Contract No. KR2326/2-1).

Published
2017

5. Observation of new neutron-rich Mn, Fe, Co, Ni, and Cu isotopes in the vicinity of $^{78}$Ni

Author

Naohito Inabe, Shin-Ichiro Nishimura, Takashi Kubo, Atsuko Odahara, H. S. Jung, Jan Taprogge, P. Morfouace, I. Matea, Ryo Taniuchi, H. Takeda, Hiroki Nishibata, P. A. Söderström, G. I. Stefan, K. Matsui, Toshiyuki Sumikama, Hiroyoshi Sakurai, D. Mengoni, K. Yoshinaga, Zhengyu Xu, Naoki Fukuda, Hiroshi Suzuki, Z. H. Li, Zs. Vajta, F. Browne, Guillaume Gey, Megumi Niikura, S. Franchoo, T. Isobe, V. Werner, P. R. John, Ayumi Yagi, Giuseppe Lorusso, D. R. Napoli, H. Baba, D. Kameda, E. Sahin, P. Doornenbal, Daisuke Suzuki, Jin Wu, Hirofumi Watanabe, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut Laue-Langevin (ILL), ILL, Japan Society for the Promotion of Science, Ministerio de Ciencia e Innovación (España), Hungarian Scientific Research Fund, National Research Foundation of Korea, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Fission, Qualitative evidence, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Weak binding, 0103 physical sciences, Neutron, Production (computer science), Atomic physics, 010306 general physics, Nuclear Experiment, Beam (structure), Energy (signal processing)
Abstract

5 pags., 3 figs., 2 tabs., Neutron-rich nuclei in the vicinity of Ni78 were produced using a U238 beam at the RIKEN Radioactive Isotope Beam Factory. The particle-identification plot for the in-flight fission fragments highlights the first observation of eight new isotopes: Mn73, Fe76, Co77,78, Ni80,81,82, and Cu83. Although the β-decay half-lives of Co77 and Ni80 were recently reported by Xu [Phys. Rev. Lett. 113, 032505 (2014)]PRLTAO0031-900710.1103/PhysRevLett.113.032505 using data from the same experiment, the current work provides the first direct, quantitative evidence for the existence of these isotopes. The experimental production cross sections are reproduced in a satisfactory manner by theoretical predictions. An odd-even staggering of the cross sections was observed, and the effect appears to become more pronounced for the most exotic nuclei that were investigated. The staggering effect was interpreted as an increase of the neutron-evaporation probability for odd-N isotopes, owing to the decrease of the neutron-separation energy, Sn. The predicted cross section for Ni80 is significantly overestimated, which may be related to a weak binding of the neutron pair above the N=50 shell closure., This work was supported by JSPS KAKENHI (25247045, 25800130), the Spanish Ministerio de Ciencia e Innovación under Contracts No. FPA2009-13377-C02 and No. FPA2011- 29854-C04, OTKA Contract No. K-100835, U.S. DOE Contract No. DE-FG02-91ER40609, and the Priority Centers Research Program in Korea (2009-0093817).

Published
2017

6. Study of Intermediate-spin States of $^{98}$Y

Author

Steffen Ketelhut, Juha Sorri, G. S. Simpson, G. Thiamova, Petr Alexa, Grégoire Kessedjian, Rauno Julin, Tuomas Grahn, C. Sage, Paul Greenlees, Juha Uusitalo, Sami Rinta-Antila, K. Hauschild, M. Ramdhane, Pauli Peura, A. Lopez-Martens, Jan Sarén, Catherine Scholey, Ulrika Jakobsson, T. Malkiewicz, Andrej Herzan, Peter B. Jones, Guillaume Gey, Paivi Nieminen, Panu Rahkila, Panu Ruotsalainen, Mikael Sandzelius, A. Vancraeyenest, F. Drouet, Sakari Juutinen, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
Physics, gamma decay, ta114, Spin states, Spins, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Fission, Isotone, Nuclear Theory, Nuclear structure, General Physics and Astronomy, Prolate spheroid, spin states, 7. Clean energy, Nuclear physics, yttrium, medicine.anatomical_structure, nuclear structure, medicine, Atomic physics, Nuclear Experiment, Nucleus
Abstract

The nuclear structure of the odd–odd nucleus 98Y has been re-investigated by observing prompt γ rays emitted following the proton-induced fission of a 238U target, using the JUROGAM-II multidetector array. New highspin decays have been observed and placed in the level schemes using triple coincidences. The experimental level energies and γ-decay patterns are compared to GICM and QPRM calculations, assuming that this neutronrich N = 59 isotone is spherical at low energies and prolate deformed at intermediate spins. Web of Science 47 3 916 911

Published
2015

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