Isomer Spectroscopy of Neutron-rich $^{165,167}$Tb

Autor:	H. Baba, W. N. Catford, Hirofumi Watanabe, S. Kanaya, Furong Xu, Toshiyuki Kubo, Giuseppe Lorusso, Zsolt Podolyak, T. Isobe, I. Nishizuka, Z. Korkulu, Shunji Nishimura, Shigeru Kubono, P-A Soderstrom, István Kuti, Alison Bruce, Satoru Terashima, I. Kojouharov, P. Lee, L. A. Gurgi, H. L. Liu, Hiroyoshi Sakurai, Toshiyuki Sumikama, T. Berry, N. Kurz, Oliver J. Roberts, Chang-Bum Moon, Naohito Inabe, E. J. Lee, Ayumi Yagi, Hiroyuki Takeda, P. H. Regan, Hiroshi Suzuki, C. J. Griffin, Zhengyu Xu, K. Y. Chae, Gavin Lotay, Thamer Alharbi, G. X. Zhang, Naoki Fukuda, Raymond J. Carroll, C. M. Shand, S. Lalkovski, Eiji Ideguchi, Gregory Lane, H. Kanaoka, P. Doornenbal, Jin Wu, F. G. Kondev, Zsolt Dombrádi, F. Browne, Atsuko Odahara, C.R. Nita, Zs. Vajta, C. S. Lee, H. Schaffner, J. J. Liu, J-J Valiente-Dobón, Zena Patel, V. H. Phong, Philip M Walker, A. Estrade
Rok vydání:	2017
Předmět:	Physics Proton 010308 nuclear & particles physics Fission Nuclear Theory General Physics and Astronomy Fermi surface 01 natural sciences Nuclear physics Excited state 0103 physical sciences Neutron Atomic physics Nuclear Experiment 010306 general physics Nucleon Spectroscopy Ground state
Zdroj:	Acta Physica Polonica B. 48:601
ISSN:	1509-5770 0587-4254
Popis:	We present information on the excited states in the prolate-deformed, neutron-rich nuclei 165;167Tb100;102. The nuclei of interest were synthesised following in-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm 9Be target at the Radioactive Ion-Beam Factory (RIBF), RIKEN, Japan. The exotic nuclei were separated and identified event-by-event using the BigRIPS separator, with discrete energy gamma-ray decays from isomeric states with half-lives in the s regime measured using the EURICA gamma-ray spectrometer. Metastable-state decays are identified in 165Tb and 167Tb and interpreted as arising from hindered E1 decay from the 7 2 [523] single quasi-proton Nilsson configuration to rotational states built on the 3 2 [411] single quasi-proton ground state. These data correspond to the first spectroscopic information in the heaviest, odd-A terbium isotopes reported to date and provide information on proton Nilsson configurations which reside close to the Fermi surface as the 170Dy doubly-midshell nucleus is approached.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd55da68245fd3f46b3d7d48cc54ec40 https://doi.org/10.5506/aphyspolb.48.601 Zobrazit plný text záznamu Plný text ve formátu PDF