GT strengths studied by (3He, t) reactions and nuclear matrix elements for double beta decays
GT strengths studied by (3He, t) reactions and nuclear matrix elements for double beta decays
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通过 (3He, t) 反应和核基质元素研究双 β 衰变的 GT 强度
DOI：
10.1016/s0370-2693(96)01659-0
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发表时间：
1997
影响因子：
4.4
通讯作者：
M. Yosoi
中科院分区：
文献类型：
--
作者：
H. Akimune;H. Ejiri;M. Fujiwara;I. Daito;T. Inomata;R. Hazama;A. Tamii;H. Toyokawa;M. Yosoi
通过测量100Mo和116Cd上的（3He，t）反应，得到了100Mo（0+）→100Tc（1+）和116Cd（0+）→116In（1+）跃迁的GT矩阵元MSν。利用MSν和100 Tc（1+）→ 100 Ru（0+）和116 In（1+）→ 116 Sn（+）的GT矩阵元MS′ν，分别估算了100 Mo和116 Cd通过100 Tc和116 In中间核1+基态的两个中微子双β衰变（2νββ）的核矩阵元MSS′2ν.它们与观测到的2νββ矩阵元M2ν非常接近，与最近的实验和理论分析一致。
GT matrix elements MSνfor transitions of100Mo(0+) →100Tc(1+) and116Cd(0+) →116In(1+) were obtained by measuring (3He, t) reactions on100Mo and116Cd, respectively. The values for MSν, together with the GT matrix elements MS′νfor100Tc(1+) →100Ru(0+) and116In(1+) →116Sn(+), are applied to estimate the nuclear matrix elements MSS′2νfor the two neutrino double beta decays (2νββ) of100Mo and116Cd through the 1+ground states in the intermediate nuclei of100Tc and116In, respectively. They are very close to the observed 2νββ matrix elements M2ν, consistent with recent experimental and theoretical analyses.