Isovector spin-multipole strength distributions in double-β-decay triplets

摘要

In this work the energetics and strength distributions of isovector spin-dipole and spin-quadrupole transitions from the ground states of the pairs (~(76)Ge, ~(76)Se), (~(82)Se, ~(82)Kr), (~(96)Zr, ~(96)Mo), (~(100)Mo, ~(100)Ru), (~(116)Cd, ~(116)Sn), (~(128)Te, ~(128)Xe), (~(130)Te, ~(130)Xe), and (~(136)Xe, ~(136)Ba), of double-β-decay initial and final nuclei, to the J~π = 0~-,1~-,2~- ,1~+,2~+,and 3~+ excited states of the intermediate odd-odd nuclei ~(76)As, ~(82)Br, ~(96)Nb, ~(100)Tc, ~(116)In, ~(128,130)I, and ~(136)Cs are investigated. The calculations are performed using a proton-neutron quasiparticle random-phase approximation (pnQRPA) theory framework with the Bonn-A two-body interaction in no-core single-particle valence spaces.