Two-phonon structure of low-energy 1+ excitations of 130 In

The 1(+) spectrum of In-130 populated in the beta decay of Cd-130 is studied. The coupling between one- and two-phonon terms in the wave functions of 1(+) states is taken into account within the microscopic model based on the Skyrme interaction. The approach enables one to perform the calculations in very large configurational spaces. The new calculation is extended by enlarging the variational space for the 1(+) states with the inclusion of the two-phonon configurations. The dominant contribution to the additional 1(+) states comes from the [3(+) circle times 1 2(+)](QRPA) two-phonon configurations constructed from the charge-exchange 3(+) phonons. A correlation is found between the low-lying E2 transition strengths of the parent and daughter isobaric companions. Using the same set of parameters this correlation is studied also for In-126,In-128 and Cd-126,Cd-128.