β -decay half-lives of 55 neutron-rich isotopes beyond the N=82 shell gap

J. Wu, S. Nishimura, P. Möller, M. R. Mumpower, R. Lozeva, C. B. Moon, A. Odahara, H. Baba, F. Browne, R. Daido, P. Doornenbal, Y. F. Fang, M. Haroon, T. Isobe, H. S. Jung, G. Lorusso, B. Moon, Z. Patel, S. Rice, H. SakuraiY. Shimizu, L. Sinclair, P. A. Söderström, T. Sumikama, H. Watanabe, Z. Y. Xu, A. Yagi, R. Yokoyama, D. S. Ahn, F. L. Bello Garrote, J. M. Daugas, F. Didierjean, N. Fukuda, N. Inabe, T. Ishigaki, D. Kameda, I. Kojouharov, T. Komatsubara, T. Kubo, N. Kurz, K. Y. Kwon, S. Morimoto, D. Murai, H. Nishibata, H. Schaffner, T. M. Sprouse, H. Suzuki, H. Takeda, M. Tanaka, K. Tshoo, Y. Wakabayashi

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

The β-decay half-lives of 55 neutron-rich nuclei Sn134-139, Sb134-142, Te137-144, I140-146, Xe142-148, Cs145-151, Ba148-153, and La151-155 were measured at the Radioactive Isotope Beam Factory employing the projectile fission fragments of U238. The nuclear level structure, which relates to deformation, has a large effect on the half-lives. The impact of newly measured half-lives on modeling the astrophysical origin of the heavy elements is studied in the context of r process nucleosynthesis. For a wide variety of astrophysical conditions, including those in which fission recycling occurs, the half-lives have an important local impact on the second (A ≈ 130) peak.

本文言語英語
論文番号042801
ジャーナルPhysical Review C
101
4
DOI
出版ステータス出版済み - 4 2020
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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