Calculations of β-decay half-lives of proton-rich nuclei

Calculations of the β-decay half-lives of neutron-deficient nuclei

“…Minor changes in the calculated halflife are found as the empirical pairing gaps are varied, and it shows the weak dependence of the half-life on the pairing gap energy. This feature is in accordance with the other theoretical investigation [28].…”

“…The purpose of this work is to present detailed calculations of β + /EC-decay half-lives for even-even protonrich medium nuclei based on the extended QRPA with np pairing. Compared with some other pnQRPA calculations of β-decay half-lives [27,28], there are two main differences. First, the two-body interactions matrix is obtained with charge-dependent Bonn forces instead of the simple δ-form or separable schematic interactions.…”

β-decay rates of neutron-rich Zr and Mo isotopes in the deformed quasiparticle random-phase approximation with realistic interactions

“…For GT transitions, the shape factor is not dependent on the β energy W and has the form [27][28][29][30][31][32][33][34] …”

“…So one can separately perform both mean-field and QRPA calculations in each K π block. The intrinsic excitations are defined by QRPA phonon excitation operators [27][28][29][30][31][32][33],…”

“…The QRPA excited states |mK π are generated by the QRPA phonon excitation operator acting on the QRPA ground state |0 , i.e., |mK π = Q † m,K π |0 . The usual QRPA matrix equations have the form [27][28][29][30][31][32][33] …”