β-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation

Nikšić, Tamara and Marketin, Tomislav and Vretenar, Dario and Paar, Nils and Ring, Peter (2005) β-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation. Physical Review C, 71 (1). pp. 14308-15. ISSN 0556-2813

[img]
Preview
PDF - Published Version
Language: English

Download (194kB) | Preview

Abstract

The fully consistent relativistic proton-neutron quasiparticle random phase approximation (PN-RQRPA) is employed in the calculation of -decay half-lives of neutron-rich nuclei in the N50 and N82 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 132Sn.

Item Type: Article
Keywords: forces in hadronic systems and nuclear effective interactions, B decay relation with nuclear matrix elements and nuclear structure, nucleosynthesis in novae, supernovae, and other explosive environments
Date: January 2005
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2005) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 0119250
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 03 Jun 2014 10:59
Last Modified: 03 Jun 2014 10:59
URI: http://digre.pmf.unizg.hr/id/eprint/1697

Actions (login required)

View Item View Item