arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.00119nucl-ex
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$β$ -N=82壳层间隙外55个丰中子同位素的衰变半衰期

$β$-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,… 展开作者

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

摘要:

在放射性同位素束工厂(RIBF)用$^{238}$ U的抛射裂变碎片测量了55个丰中子核$^{134-139}$ Sn,$^{134-142}$ Sb,$^{137-144}$ Te,$^{140-146}$ I,$^{142-148}$ Ba,$^{145-151}$ Cs,$^{148-153}$ Ba,$^{151-155}$ La的$β$衰变半衰期。与形变有关的核能级结构对半衰期有很大影响。在$r$过程核合成的背景下,研究了新测量的半衰期对模拟重元素天体物理起源的影响。对于各种各样的天体物理条件,包括发生裂变再循环的条件,半衰期对第二个峰值($A$ $\approx$ 130)有重要的局部影响。

英文摘要:

The $β$-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 the projectile fission fragments of $^{238}$U. 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 ($A$ $\approx$ 130) peak.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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