Ground-state β-decay spectroscopy of Ta-187
Ground-state β-decay spectroscopy of Ta-187
复制标题
Ta-187 的基态 β 衰变光谱
DOI：
10.1103/physrevc.105.034331
复制
发表时间：
2022
影响因子：
3.1
通讯作者：
Walker P. M.
中科院分区：
文献类型：
--
作者：
Mukai M.;Hirayama Y.;Watanabe Y. X.;Watanabe H.;Koura H.;Jeong S. C.;Miyatake H.;Brunet M.;Ishizawa S.;Kondev F. G.;Lane G. J.;Litvinov Yu. A.;Niwase T.;Oyaizu M.;Podolyak Zs.;Rosenbusch M.;Schury P.;Wada M.;Walker P. M.
在KEK同位素分离系统中进行了基态的β-衰变光谱。观察到对应于先前报道的束内跃迁的延迟射线。通过对符合事件时间谱的分析，确定了基态的衰变半衰期为283（10）s。首次计算了衰变分支比和log（）值。基于新估算的log（）值和衰变方案，对起源于奇质子轨道的核素的自旋宇称值进行了高置信度的赋值，这与邻近的奇核素的系统学是一致的。
Beta-decay spectroscopy of theground state was performed at the KEK Isotope Separation System.-delayedrays corresponding to the previously reported in-beam transitions were observed. The-decay half-life of theground state was determined to be 283(10) s by analyzing a time spectrum ofcoincidence events. The-decay branching ratio and log() values were evaluated for the first time. Based on the newly evaluated log() values ofand a decay scheme, spin-parity values oforiginating from the odd-proton orbitwere assigned with high confidence, which is consistent with the systematics of neighboring odd-nuclides.