Weak Interaction Rates of Nuclei Near the R-Process Paths
- Gesellschaft fuer Schwerionenforschung, Darmstadt, D-64291 (Germany)
- Institute for Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
Systematic calculations of the beta- and neutrino-induced rates are performed for the nuclei at Z=92-96 approaching the possible r-process paths in vicinity of the spherical neutron shell at N=184. The nuclear ground states are treated self-consistently in the framework of the local energy-density functional (DF) theory. The beta-strength-functions of the Gamow-Teller and first-forbidden decays are calculated within the continuum QRPA approach of the finite Fermi system theory. The beta-decay half-lives and beta-delayed neutron emission probabilities are analyzed simultaneously. Within the same approach the weak interaction rates are calculated for the fission products around Z{approx_equal}50, N=82 forming the A=130 peak in the r-process isotopic abundance. A shell-model study of selected Pd isotopes is performed. An analysis of available experimental data and theoretical predictions from the FRDM is also presented.
- OSTI ID:
- 21061796
- Journal Information:
- AIP Conference Proceedings, Vol. 912, Issue 1; Conference: International symposium on exotic nuclei, Khanty-Mansiysk (Russian Federation), 17-22 Jul 2006; Other Information: DOI: 10.1063/1.2746591; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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