dorsal/arxiv
View SchemaStellar Weak Interaction Rates and Energy Losses for fp-Shell Nuclei in the Proton-Neutron Quasiparticle Random-Phase Approximation
| Authors | J. -U Nabi, H. V. Klapdor-Kleingrothaus |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9907112 |
| URL | https://arxiv.org/abs/nucl-th/9907112 |
Abstract
Nuclear weak interaction rates for fp-shell nuclei in stellar matter and the associated energy losses are calculated using a modified form of proton-neutron quasiparticle RPA model with separable Gamow-Teller forces. The stellar weak rates are calculated over a wide range of densities (10 < \rho Y_{e} (gcm^{-3}) < 10^{11}) and temperatures (10^{7} < T(K) < 30 x 10^{9}). This is the first ever extensive compilation of weak interaction rates in stellar matter calculated over a wide temperature-density grid and over a larger mass range. The calculated capture and decay rates take into consideration the latest experimental energy levels and ft value compilations. We have calculated stellar weak interaction rates for a total of 619 nuclei in the mass range A = 40 to 100. These also include many important neutron-rich nuclei which play an important role in the evolution process of stellar collapse. This is our second paper in a series where we will be presenting our results on an abbreviated scale of temperature and density for the mass range A = 18 to 100. This paper contains the stellar weak rates in the mass range 40 to 60.
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"abstract": "Nuclear weak interaction rates for fp-shell nuclei in stellar matter and the\nassociated energy losses are calculated using a modified form of proton-neutron\nquasiparticle RPA model with separable Gamow-Teller forces. The stellar weak\nrates are calculated over a wide range of densities (10 \u003c \\rho Y_{e} (gcm^{-3})\n\u003c 10^{11}) and temperatures (10^{7} \u003c T(K) \u003c 30 x 10^{9}). This is the first\never extensive compilation of weak interaction rates in stellar matter\ncalculated over a wide temperature-density grid and over a larger mass range.\nThe calculated capture and decay rates take into consideration the latest\nexperimental energy levels and ft value compilations. We have calculated\nstellar weak interaction rates for a total of 619 nuclei in the mass range A =\n40 to 100. These also include many important neutron-rich nuclei which play an\nimportant role in the evolution process of stellar collapse. This is our second\npaper in a series where we will be presenting our results on an abbreviated\nscale of temperature and density for the mass range A = 18 to 100. This paper\ncontains the stellar weak rates in the mass range 40 to 60.",
"arxiv_id": "nucl-th/9907112",
"authors": [
"J. -U Nabi",
"H. V. Klapdor-Kleingrothaus"
],
"categories": [
"nucl-th"
],
"title": "Stellar Weak Interaction Rates and Energy Losses for fp-Shell Nuclei in the Proton-Neutron Quasiparticle Random-Phase Approximation",
"url": "https://arxiv.org/abs/nucl-th/9907112"
},
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