The two neutrino double beta decay of 124,126Xe,128,130Te, 130,132Ba and 150Nd isotopes is studied in the Projected
Hartree-Fock-Bogoliubov (PHFB) model. Theoretical 2νβ−β−
half-lives of 128,130Te, and 150Nd isotopes, and 2νβ+β+, 2νβ+EC and 2νECEC for 124,126Xe and 130,132Ba nuclei are presented. Calculated quadrupolar
transition probabilities B(E2: 0+→2+), static quadrupole moments and g
factors in the parent and daughter nuclei reproduce the experimental
information, validating the reliability of the model wave functions. The
anticorrelation between nuclear deformation and the nuclear transition matrix
element M2ν is confirmed.Comment: 19 page