Correlation between the quenching of total GT+ strength and the increase of E2 strength

Abstract Relations between the total β + Gamow-Teller (GT + ) strength and the E2 strength are further examined. It is found that in shell-model calculations for N = Z nuclei, in which changes in deformation are induced by varying the single-particle energies, the total GT + or GT − strength decreases monotonically with increasing values of the B (E2) from the ground state to the first excited J π = 2 + state. Similar trends are also seen for the double GT transition amplitude (with some exceptions) and for the spin part of the total M1 strength as a function of B (E2).