133In：r-过程核衰变的罗塞塔石碑
核实验
2023-07-17 v1 核理论
摘要
在ISOLDE衰变站（IDS）研究了In的基态与长寿命同核异构体的衰变。借助对、和中子能谱敏感的混合探测系统，首次测量了它们所有主导衰变分支的比较偏半衰期（logft），包括一个低能Gamow-Teller跃迁和若干一级禁戒（FF）跃迁。对于如此重的富中子核而言独特的是，它们的衰变仅选择性地布居Sn中少数孤立的中子非束缚态。对这些共振的能量和分支比的精确测量使我们能在该核素图区域以空前水平基准检验衰变理论。结果显示与新开发的大尺度壳模型（LSSM）计算吻合良好。实验发现确立了Sn东南方向富中子核衰变的原型，并将作为未来旨在准确描述快中子俘获（r-）过程中关键衰变的理论发展的指导。
引用
@article{arxiv.2306.01842,
title = {133In: A Rosetta Stone for decays of r-process nuclei},
author = {Z. Y. Xu and M. Madurga and R. Grzywacz and T. T. King and A. Algora and A. N. Andreyev and J. Benito and T. Berry and M. J. G. Borge and C. Costache and H. De Witte and A. Fijalkowska and L. M. Fraile and H. O. U. Fynbo and A. Gottardo and C. Halverson and L. J. Harkness-Brennan and J. Heideman and M. Huyse and A. Illana and Ł. Janiak and D. S. Judson and A. Korgul and T. Kurtukian-Nieto and I. Lazarus and R. Lică and R. Lozeva and N. Marginean and R. Marginean and C. Mazzocchi and C. Mihai and R. E. Mihai and A. I. Morales and R. D. Page and J. Pakarinen and M. Piersa-Siłkowska and Zs. Podolyák and P. Sarriguren and M. Singh and Ch. Sotty and M. Stepaniuk and O. Tengblad and A. Turturica and P. Van Duppen and V. Vedia and S. Viñals and N. Warr and R. Yokoyama and C. X. Yuan},
journal= {arXiv preprint arXiv:2306.01842},
year = {2023}
}