Abstract
We try to give a detailed analysis of the 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− 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.
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