Relevance of the Nuclear Structure of the Stable Ge Isotopes to the Neutrino-less Double-Beta Decay of 76 Ge
Relevance of the Nuclear Structure of the Stable Ge Isotopes to the Neutrino-less Double-Beta Decay of 76 Ge
复制标题
稳定Ge同位素核结构与76 Ge无中微子双β衰变的相关性
DOI：
10.1051/epjconf/202023204011
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发表时间：
2020
影响因子：
--
通讯作者：
Koll, D.
中科院分区：
文献类型：
--
作者：
Yates, S. W.;Peters, E. E.;Crider, B. P.;Mukhopadhyay, S.;Ramirez, A. P.;Mitchell, A.J.;Pavetich, S.;Koll, D.
利用中子在同位素富集材料上的非弹性散射反应，用γ射线探测研究了74Ge的核结构。从这些测量，低洼，低自旋激发态的特点，新的状态和它们的衰变被确定，水平寿命测量与多普勒频移衰减方法（DSAM），多极混合比建立，并确定跃迁几率。新的结构特征在74 Ge被确定，和老的76 Ge数据的重新分析导致的2+成员的入侵带的位置。此外，一些先前在74Ge中放置的状态被证明不存在。为今后的工作，这将导致有意义的数据约束计算的中微子双β衰变矩阵元的程序，建议。
Gamma-ray detection following the inelastic neutron scattering reaction on isotopically enriched material was used to study the nuclear structure of74Ge. From these measurements, low-lying, low-spin excited states were characterized, new states and their decays were identified, level lifetimes were measured with the Doppler-shift attenuation method (DSAM), multipole mixing ratios were established, and transition probabilities were determined. New structural features in74Ge were identified, and the reanalysis of older76Ge data led to the placement of the 2+member of the intruder band. In addition, a number of previously placed states in74Ge were shown not to exist. A procedure for future work, which will lead to meaningful data for constraining calculations of the neutrinoless double-beta decay matrix element, is suggested.