Deepak Patel , Praveen C. Srivastava , V.K.B. Kota , R. Sahu
{"title":"Large-scale shell-model study of two-neutrino double beta decay of 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd","authors":"Deepak Patel , Praveen C. Srivastava , V.K.B. Kota , R. Sahu","doi":"10.1016/j.nuclphysa.2023.122808","DOIUrl":null,"url":null,"abstract":"<div><p>Large-scale shell-model calculations have been performed for the study of two-neutrino double-beta (<span><math><mn>2</mn><mi>ν</mi><mi>β</mi><mi>β</mi></math></span>) decay in <sup>82</sup>Se, <sup>94</sup>Zr, <sup>108</sup>Cd, <sup>124</sup>Sn, <sup>128</sup>Te, <sup>130</sup>Te, <sup>136</sup>Xe, and <sup>150</sup>Nd. We have employed JUN45 interaction to calculate the nuclear matrix element (NME) for <span><math><mn>2</mn><mi>ν</mi><mi>β</mi><mi>β</mi></math></span> decay in <sup>82</sup>Se. In the case of <sup>94</sup>Zr, the glekpn effective interaction is used. For <sup>108</sup>Cd, we have used a realistic effective interaction derived through the G-matrix approach. In the case of <sup>124</sup>Sn, <sup>128,130</sup>Te and <sup>136</sup>Xe, the sn100pn effective interaction is employed. For <sup>150</sup>Nd, we have used KHHE effective interaction based on holes in a <sup>208</sup>Pb core. We have extracted the half-lives of these nuclei for the <span><math><mn>2</mn><mi>ν</mi><mi>β</mi><mi>β</mi></math></span> decay with the help of calculated NME. Our results are consistent with the available experimental half-lives. The variation of cumulative <span><math><mn>2</mn><mi>ν</mi><mi>β</mi><mi>β</mi></math></span> NME with respect to the excitation energy of the intermediate <span><math><msup><mrow><mn>1</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> 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 <span><math><msup><mrow><mn>1</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> states as much as possible in comparison to results available in the literature.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Physics A","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375947423002129","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Large-scale shell-model calculations have been performed for the study of two-neutrino double-beta () decay in 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd. We have employed JUN45 interaction to calculate the nuclear matrix element (NME) for 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 decay with the help of calculated NME. Our results are consistent with the available experimental half-lives. The variation of cumulative NME with respect to the excitation energy of the intermediate 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 states as much as possible in comparison to results available in the literature.
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.