Large-scale shell-model study of two-neutrino double beta decay of 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd

IF 1.7 4区 物理与天体物理 Q2 PHYSICS, NUCLEAR
Deepak Patel , Praveen C. Srivastava , V.K.B. Kota , R. Sahu
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引用次数: 0

Abstract

Large-scale shell-model calculations have been performed for the study of two-neutrino double-beta (2νββ) decay in 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd. We have employed JUN45 interaction to calculate the nuclear matrix element (NME) for 2νββ decay in 82Se. In the case of 94Zr, the glekpn effective interaction is used. For 108Cd, we have used a realistic effective interaction derived through the G-matrix approach. In the case of 124Sn, 128,130Te and 136Xe, the sn100pn effective interaction is employed. For 150Nd, we have used KHHE effective interaction based on holes in a 208Pb core. We have extracted the half-lives of these nuclei for the 2νββ decay with the help of calculated NME. Our results are consistent with the available experimental half-lives. The variation of cumulative 2νββ NME with respect to the excitation energy of the intermediate 1+ states is also shown, and in all cases, it is ensured that their values are almost saturated. In the present work we have calculated more intermediate 1+ states as much as possible in comparison to results available in the literature.

82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe和150Nd双中微子双β衰变的大尺度壳层模型研究
在82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe和150Nd中进行了大规模的壳模型计算,研究了双中微子双β (2νββ)衰变。我们利用JUN45相互作用计算了82Se中2νββ衰变的核矩阵元素(NME)。在94Zr的情况下,使用glekpn有效相互作用。对于108Cd,我们使用了通过g矩阵方法导出的实际有效相互作用。在124Sn, 128,130Te和136Xe的情况下,采用sn100pn有效相互作用。对于150Nd,我们采用了基于208Pb岩心空穴的KHHE有效相互作用。我们利用计算的NME计算出了这些原子核的2νββ衰变的半衰期。我们的结果与现有的实验半衰期一致。还显示了累积2νββ NME相对于中间1+态的激发能的变化,并且在所有情况下,确保它们的值几乎饱和。在目前的工作中,我们计算了尽可能多的中间1+态,与文献中的结果相比。
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来源期刊
Nuclear Physics A
Nuclear Physics A 物理-物理:核物理
CiteScore
3.60
自引率
7.10%
发文量
113
审稿时长
61 days
期刊介绍: Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.
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