dorsal/arxiv
View SchemaBeta-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation
| Authors | T. Niksic, T. Marketin, D. Vretenar, N. Paar, P. Ring |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0412028 |
| URL | https://arxiv.org/abs/nucl-th/0412028 |
| DOI | 10.1103/PhysRevC.71.014308 |
| Journal | Phys.Rev.C71:014308,2005 |
Abstract
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$50 and N$\approx$82 regions. A new density-dependent effective interaction, with an enhanced value of the nucleon effective mass, is used in relativistic Hartree-Bogoliubov calculation of nuclear ground states and in the particle-hole channel of the PN-RQRPA. The finite range Gogny D1S interaction is employed in the T=1 pairing channel, and the model also includes a proton-neutron particle-particle interaction. The theoretical half-lives reproduce the experimental data for the Fe, Zn, Cd, and Te isotopic chains, but overestimate the lifetimes of Ni isotopes and predict a stable 132Sn.
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"abstract": "The fully consistent relativistic proton-neutron quasiparticle random phase\napproximation (PN-RQRPA) is employed in the calculation of beta-decay\nhalf-lives of neutron-rich nuclei in the N$\\approx$50 and N$\\approx$82 regions.\nA new density-dependent effective interaction, with an enhanced value of the\nnucleon effective mass, is used in relativistic Hartree-Bogoliubov calculation\nof nuclear ground states and in the particle-hole channel of the PN-RQRPA. The\nfinite range Gogny D1S interaction is employed in the T=1 pairing channel, and\nthe model also includes a proton-neutron particle-particle interaction. The\ntheoretical half-lives reproduce the experimental data for the Fe, Zn, Cd, and\nTe isotopic chains, but overestimate the lifetimes of Ni isotopes and predict a\nstable 132Sn.",
"arxiv_id": "nucl-th/0412028",
"authors": [
"T. Niksic",
"T. Marketin",
"D. Vretenar",
"N. Paar",
"P. Ring"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.71.014308",
"journal_ref": "Phys.Rev.C71:014308,2005",
"title": "Beta-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation",
"url": "https://arxiv.org/abs/nucl-th/0412028"
},
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