The 2νβ⁻β⁻ decay rates within Pyatov's restoration method

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• 关键词：2νβ&minus ; β&minus ; 2νβ&minus ; β&minus ; decay ; Restoration ; pnQRPA
• 刊名：Nuclear Physics A
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：957
• 期：Complete
• 页码：491-512
• 全文大小：697 K
• 卷排序：957

文摘

We try to give a detailed analysis of the 2νβ−β−2νβ−β− decay rates to the final ground states for decay emitters: 70Zn, 80Se, 86Kr, 94Zr, 104Ru, 110Pd, 114Cd and 124Sn. The nucleon–nucleon residual interaction potential is defined according to Pyatov's restoration method. The nuclear matrix element for 2νβ−β−2νβ−β− decay is obtained by including the virtual contributions coming from the isobar analogue excitations within the framework of proton–neutron quasi-particle random phase approximation (pnQRPA). The calculated decay rates are compared with mean field, schematic model and other calculations.