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

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number044320
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number4
DOIs
Publication statusPublished - Oct 21 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'β -delayed γ -ray spectroscopy of non-yrast states in Te 138 near the neutron drip line'. Together they form a unique fingerprint.

Cite this