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

• DOI: 10.1103/physrevc.101.042801
• Publication Date: 2020-04-24T20:20:51Z
• Authors: 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. Sakurai; Y. 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
• Keywords: 0103 physical sciences; FOS: Physical sciences; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; Nuclear Experiment (nucl-ex); 530; Nuclear Experiment; 01 natural sciences

The $\beta$-decay half-lives of 55 neutron-rich nuclei $^{134-139}$Sn, $^{134-142}$Sb, $^{137-144}$Te, $^{140-146}$I, $^{142-148}$Xe, $^{145-151}$Cs, $^{148-153}$Ba, $^{151-155}$La were measured at the Radioactive Isotope Beam Factory (RIBF) employing projectile fission fragments $^{238}$U. nuclear level structure, which relates to deformation, has a large effect on half-lives. impact newly-measured modeling astrophysical origin heavy elements is studied in context $r$ process nucleosynthesis. For wide variety conditions, including those recycling occurs, have an important local second ($A$ $\approx$ 130) peak.