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Various nuclear structures in Xe 140 studied by β decay of ground and isomeric states in i 140

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Title
Various nuclear structures in Xe 140 studied by β decay of ground and isomeric states in i 140
Author(s)
Yagi, A.; Odahara, A.; Nishibata, H.; Lozeva, R.; Chang Bum Moon; Nishimura, S.; Yoshida, K.; Yoshinaga, N.; Watanabe, C.; Higashiyama, K.; Shimoda, T.; Daido, R.; Fang, Y.; Lee, P.S.; Moon, B.; Doornenbal, P.; Lorusso, G.; Soderstrom, P.-A.; Sumikama, T.; Watanabe, H.; Isobe, T.; Baba, H.; Sakurai, H.; Browne, F.; Patel, Z.; Rice, S.; Sinclair, L.; Wu, J.; Xu, Z.Y.; Yokoyama, R.; Kubo, T.; Inabe, N.; Suzuki, H.; Fukuda, N.; Kameda, D.; Takeda, H.; Deuk Soon, Ahn; Shimizu, Y.; Murai, D.; Bello, Garrote F.L.; Daugas, J.-M.; Didierjean, F.; Ideguchi, E.; Iimura, S.; Ishigaki, T.; Jung, H.S.; T. Komatsubara; Y.K. Kwon; Lee, C.S.; Morimoto, S.; Niikura, M.; Nishizuka, I.; K. Tshoo
Publication Date
2022-04
Journal
Physical Review C, v.105, no.4
Publisher
American Physical Society
Abstract
© 2022 American Physical Society.Structure of the neutron-rich N=86 isotope 140Xe, located northeast of a doubly-magic nucleus 132Sn, is investigated by β-γ spectroscopy. Two β-decay isomers in I140 are newly found in the study of two different β decays of I140 which were produced by two reactions (i) direct in-flight fission at a primary target and (ii) β decay of Te140 at an active stopper. Half-lives of the β decays of the ground state, the low-spin isomer, and the high-spin isomer are determined to be 0.38(2), 0.91(5), and 0.47(4) s, respectively. Decay schemes of the β decay of the high-spin isomer and of the mixed β decays of the ground state and the low-spin isomer in I140 to Xe140 are constructed using the information on γ-ray coincidence relation and γ-ray intensity. Nuclear structures of the low-lying states in Xe140 and I140 are discussed by comparing the experimental results to two theoretical calculations based on a large-scale shell model and the deformed Skyrme Hartree-Fock-Bogoliubov plus deformed quasiparticle-random-phase approximation. Possible candidates for (quasi-)γ-band members of 2+ and 4+ states and the octupole collective 1-state are proposed in Xe140. Increase of quadrupole, triaxial, and octupole collectivities is discussed with the increase of neutron and proton numbers.
URI
https://pr.ibs.re.kr/handle/8788114/12153
DOI
10.1103/PhysRevC.105.044325
ISSN
2469-9985
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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