Collective bands in⁸¹Sr

DEFORMED SHELL MODEL RESULTS FOR TWO-NEUTRINO POSITRON DOUBLE BETA DECAY OF 84Sr

“…In Eq. Let us add that the recently introduced projected configuration interaction (PCI) model of Horoi et al [36,37] and the projected shell model (PSM) of Sun et al [38][39][40] [41] in the ( 2 p 3/2 , 1 f 5/2 , 2 p 1/2 , 1 g 9/2 ) space with 56 Ni as the inert core. The spe of these orbitals are taken as 0.0, 0.78, 1.08 and 3.5 MeV respectively in a first set of calculations and in the next set of calculations, the 1 g 9/2 energy for the protons and/or neutrons is changed to 1.5 MeV for reasons discussed in detail ahead.…”

Deformed shell model results for two-neutrino positron double-βdecay ofSe74

“…In our calculations of 74 Se 2ν e + DBD half-lives, for the structure of the nuclei 74 Se, 74 As, and 74 Ge, we have used a modified Kuo effective interaction [34] in the ( 2 p 3/2 , 1 f 5/2 , 2 p 1/2 , 1 g 9/2 ) space with 56 Ni as the inert core. The single-particle energies of these orbitals are taken as 0.0, 0.78, 1.08, and 4.5 MeV respectively.…”

Deformed shell model results for neutrinoless double beta decay of nuclei in A = 60 - 90 region

“…As in the case of 70 Zn, we will first consider spectroscopic properties of these nuclei before discussing the double beta decay results. Both the nuclei are studied using the modified Kuo effective interaction given in [58] in the model space consisting of the single particle orbitals 2 p 3/2 , 1 f 5/2 , 2 p 1/2 and 1 g 9/2 with 56 Ni as the core. This effective interaction was used by us in most of our calculations for A=60-90 nuclei.…”