Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-06-29
Eur.Phys.J.A33:375-388,2007
Physics
Nuclear Physics
Nuclear Theory
19 pages
Scientific paper
10.1140/epja/i2007-10481-7
The two neutrino double beta decay of $^{124,126}$Xe,$^{128,130}$Te, $ ^{130,132}$Ba and $^{150}$Nd isotopes is studied in the Projected Hartree-Fock-Bogoliubov (PHFB) model. Theoretical 2$\nu $ $\beta^{-}\beta ^{-}$ half-lives of $^{128,130}$Te, and $^{150}$Nd isotopes, and 2$\nu \beta^{+}\beta^{+}$, 2$\nu $ $\beta^{+}EC$ and 2$\nu $ $ECEC$ for $ ^{124,126}$Xe and $^{130,132}$Ba nuclei are presented. Calculated quadrupolar transition probabilities B(E2: $0^+\to 2^+$), 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 $M_{2\nu} $ is confirmed.
Chandra Ramesh
Hirsch Jorge G.
Raina P. K.
Rath Pranati K.
Singh Sumeetpal S.
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