β -delayed γ -ray spectroscopy of non-yrast states in Te 138 near the neutron drip line

P. Lee, C. B. Moon, C. S. Lee, A. Odahara, R. Lozeva, A. Yagi, S. Nishimura, P. Doornenbal, G. Lorusso, P. A. Söderström, T. Sumikama, H. Watanabe, T. Isobe, H. Baba, H. Sakurai, F. Browne, R. Daido, Y. Fang, H. Nishibata, Z. PatelS. Rice, L. Sinclair, J. Wu, Z. Y. Xu, R. Yokoyama, T. Kubo, N. Inabe, H. Suzuki, N. Fukuda, D. Kameda, H. Takeda, D. S. Ahn, D. Murai, F. L. Bello Garrote, J. M. Daugas, F. Didierjean, E. Ideguchi, T. Ishigaki, H. S. Jung, T. Komatsubara, Y. K. Kwon, S. Morimoto, M. Niikura, I. Nishizuka, K. Tshoo

研究成果: Contribution to journalArticle査読

20 被引用数 (Scopus)

抄録

We report on the first β-decay data of Sb138 to Te138 isotopes beyond the doubly magic Sn132. The parent nucleus was produced by the in-flight fission of a U238 beam on a Be9 target at 345 MeV per nucleon and measured at the BigRIPS separator of the Radioactive Isotope Beam Factory at RIKEN. By using advanced β-γ spectroscopy techniques, the half-life and the tentative spin-parity of Sb138 were measured to be 346(19) ms and (3-), respectively. In addition, we observed several low-lying non-yrast states in Te138 for the first time. Our data allowed us to rearrange the positions of the first 2+ and 4+ states in this nucleus and to construct the level scheme of Te138 in accordance with shell-model calculations. Additionally, we extend energy systematics of Te isotopes within neutron numbers 54 and 86.

本文言語英語
論文番号044320
ジャーナルPhysical Review C - Nuclear Physics
92
4
DOI
出版ステータス出版済み - 10 21 2015
外部発表はい

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学

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