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Nuclear Structure and Decay Data for A=167 Isobars
Nuclear Data Sheets ( IF 2.8 ) Pub Date : 2023-09-19 , DOI: 10.1016/j.nds.2023.08.001
Balraj Singh , Jun Chen

Experimental nuclear spectroscopic data are compiled and evaluated for 17 known nuclides of mass 167 (Sm, Eu, Gd, Tb, Dy, Ho, Er Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt), 23 years after the previous full evaluation by 2000Ba65. Detailed information is presented for each reaction and decay experiment. Combining all the available data, recommended values are provided for energies, spins and parities, and half-lives of levels, with energies, branching ratios and multipolarities of γ radiations, and characteristics of β and α radiations in radioactive decays. The α decays of A=171 nuclei to A=167 daughters are included in this work, while for α decays of A=167 nuclei to A=163 daughters, consult Nuclear Data Sheets (2010Re03) or the ENSDF database for A=163. 167Er, 167Tm, 167Yb, 167Lu and 167Ta are among the most extensively studied nuclides via decay and high-spin gamma-ray spectroscopy measurements, followed by 167Ho, 167Hf, 167W, and 167Os. Information for excited states in 167Dy, 167Re, and 167Ir are limited; no excited states have yet been identified in 167Sm, 167Eu, 167Gd, 167Tb and 167Pt, with the ground-state half-life of 167Sm remaining unknown. This work supersedes the earlier evaluation of A=167 nuclei by 2000Ba65.



中文翻译:

A=167 等量线的核结构和衰变数据

汇编和评估了质量为 167 的 17 种已知核素(Sm、Eu、Gd、Tb、Dy、Ho、Er Tm、Yb、Lu、Hf、Ta、W、Re、Os、Ir、Pt)的实验核光谱数据,距离2000Ba65上次全面评估已经过去了23年。提供每个反应和衰变实验的详细信息。结合所有可用数据,提供了能量、自旋和宇称、能级半衰期、γ辐射的能量、分支比和多极性以及放射性衰变中βα辐射的特征的推荐值。本工作包括 A=171 个原子核到 A=167 个子核的α衰变,而对于αA=167 核衰变为 A=163 子核,请查阅核数据表 (2010Re03) 或 ENSDF 数据库中的 A=163。167 Er、167 Tm、167 Yb、167 Lu 和167 Ta 是通过衰变和高自旋伽马射线光谱测量研究最广泛的核素之一,其次是167 Ho、167 Hf、167 W 和167 Os。有关167 Dy、167 Re 和167 Ir 激发态的信息有限;尚未在167 Sm、167 Eu、167 Gd、167 Tb 和167 Pt, 167 Sm的基态半衰期仍未知。这项工作用 2000Ba65 取代了早期对 A=167 原子核的评估。

更新日期:2023-09-22
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