학술논문
Nuclear structure of 140Te with N = 88: Structural symmetry and asymmetry in Te isotopes with respect to the double-shell closure Z = 50 and N = 82
Document Type
Working Paper
Author
Moon, C. -B.; Lee, P.; Lee, C. S.; Odahara, A.; Lozeva, R.; Yagi, A.; Browne, F.; Nishimura, S.; Doornenbal, P.; Lorusso, G.; Söderström, P. -A.; Sumikama, T.; Watanabe, H.; Isobe, T.; Baba, H.; Sakurai, H.; Daido, R.; Fang, Y.; Nishibata, H.; 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.; Ahn, D. S.; Murai, D.; Garrote, F. L. Bello; Daugas, J. M.; Didierjean, F.; Ideguchi, E.; Ishigaki, T.; Jung, H. S.; Komatsubara, T.; Kwon, Y. K.; Morimoto, S.; Niikura, M.; Nishizuka, I.; Tshoo, K.
Source
Phys. Rev. C 95, 044322 (2017)
Subject
Language
Abstract
We study for the first time the internal structure of 140Te through the beta-delayed gamma-ray spectroscopy of 140Sb. The very neutron-rich 140Sb, Z = 51 and N = 89, ions were produced by the in-flight fission of 238U beam on a 9Be target at 345 MeV per nucleon at the Radioactive Ion Beam Factory, RIKEN. The half-life and spin-parity of 140Sb are reported as 124(30) ms and (4-), respectively. In addition to the excited states of 140Te produced by the beta-decay branch, the beta-delayed one-neutron and two-neutron emission branches were also established. By identifying the first 2+ and 4+ excited states of 140Te, we found that Te isotopes persist their vibrator character with E(4+)/E(2+) = 2. We discuss the distinctive features manifest in this region, such as valence neutron symmetry and asymmetry, revealed in pairs of isotopes with the same neutron holes and particles with respect to N = 82.
Comment: 9 pages, 6 figures, EURICA campaign
Comment: 9 pages, 6 figures, EURICA campaign