{beta}-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.014308· OSTI ID:20695871

Niksic, T; Marketin, T; Vretenar, D; Paar, N; Ring, P ^[1]

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1. Physics Department, Faculty of Science, University of Zagreb (Croatia)

The fully consistent relativistic proton-neutron quasiparticle random phase approximation (PN-RQRPA) is employed in the calculation of {beta}-decay half-lives of neutron-rich nuclei in the N{approx_equal}50 and N{approx_equal}82 regions. A new density-dependent effective interaction, with an enhanced value of the nucleon effective mass, is used in relativistic Hartree-Bogoliubov calculation of nuclear ground states and in the particle-hole channel of the PN-RQRPA. The finite range Gogny D1S interaction is employed in the T=1 pairing channel, and the model also includes a proton-neutron particle-particle interaction. The theoretical half-lives reproduce the experimental data for the Fe, Zn, Cd, and Te isotopic chains but overestimate the lifetimes of Ni isotopes and predict a stable {sup 132}Sn.

• OSTI ID: 20695871
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
CADMIUM ISOTOPES
EFFECTIVE MASS
GROUND STATES
HALF-LIFE
HARTREE-FOCK METHOD
IRON ISOTOPES
LIFETIME
NEUTRON-RICH ISOTOPES
NEUTRONS
NICKEL ISOTOPES
NUCLEAR FORCES
NUCLEAR MATTER
PARTICLE INTERACTIONS
PARTICLE-HOLE MODEL
PROTONS
R PROCESS
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
TELLURIUM ISOTOPES
TIN 132
ZINC ISOTOPES