Phys.Rev. C 93, 025805 (2016)

T.Marketin, L.Huther, G.Martinez-Pinedo

Large-scale evaluation of β-decay rates of r-process nuclei with the inclusion of first-forbidden transitions

RADIOACTIVITY Z=8-110, N=11-236, A=19-339(β^-); calculated decay rates for Gamow-Teller and first-forbidden transitions, total decay rates, P_0n, P_1n, P_3n, P_4n, P_5n delayed-neutron emission probabilities, average energies of electrons antineutrinos and photons after decay. Z=47-48, A=114-154; calculated Q(β^-). Z=36-43, A=93-117; Z=37-50, N=65-88; Z=24-32, N=50; Z=42-49, N=82; Z=6-73, N=126; ^194,195,196Re, ^199,200Os, ^{198,199,201,202}Ir, ^203,204Pt, ²⁰⁴Au, ^211,212,213Tl, ^218,219Bi(β^-); calculated half-lives for β^- decay. Fully self-consistent covariant density functional theory (CDFT) framework with the ground states calculated with relativistic Hartree-Bogoliubov (RHB) model, and excited states within the proton-neutron relativistic quasiparticle random phase approximation (pn-RQRPA). Comparison with experimental Q values and half-lives. Calculated abundances of heavy nuclei, and evolution of neutron-to-seed ratio resulting from hot and cold r-processes using half-lives from the FRDM and the current model. Supplementary file contains theoretical values of half-lives and P_xn for 5409 neutron-rich nuclei.

doi: 10.1103/PhysRevC.93.025805