dorsal/arxiv
View SchemaHalf-lives and pre-supernova weak interaction rates for nuclei away from the stability line
| Authors | K. Kar, S. Chakravarti, A. Ray, S. Sarkar |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9806082 |
| URL | https://arxiv.org/abs/nucl-th/9806082 |
| DOI | 10.1088/0954-3899/24/8/045 |
| Journal | J.Phys.G24:1641-1645,1998 |
Abstract
A detailed model for the calculation of beta decay rates of the $fp$ shell nuclei for situations prevailing in pre-supernova and collapse phases of evolution of the core of massive stars leading to supernova explosion has been extended for electron-capture rates. It can also be used to determine the half-lives of neutron-rich nuclei in the $fp/fpg$ shell. The model uses an averaged Gamow-Teller (GT) strength function. But it can also use the experimental log ft values and GT strength function from $(n,p)$ reaction studies wherever available. The calculated rate includes contributions from each of the low-lying excited states of the mother including some specific resonant states ("back resonance") having large GT matrix elements.
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"abstract": "A detailed model for the calculation of beta decay rates of the $fp$ shell\nnuclei for situations prevailing in pre-supernova and collapse phases of\nevolution of the core of massive stars leading to supernova explosion has been\nextended for electron-capture rates. It can also be used to determine the\nhalf-lives of neutron-rich nuclei in the $fp/fpg$ shell. The model uses an\naveraged Gamow-Teller (GT) strength function. But it can also use the\nexperimental log ft values and GT strength function from $(n,p)$ reaction\nstudies wherever available. The calculated rate includes contributions from\neach of the low-lying excited states of the mother including some specific\nresonant states (\"back resonance\") having large GT matrix elements.",
"arxiv_id": "nucl-th/9806082",
"authors": [
"K. Kar",
"S. Chakravarti",
"A. Ray",
"S. Sarkar"
],
"categories": [
"nucl-th",
"astro-ph"
],
"doi": "10.1088/0954-3899/24/8/045",
"journal_ref": "J.Phys.G24:1641-1645,1998",
"title": "Half-lives and pre-supernova weak interaction rates for nuclei away from the stability line",
"url": "https://arxiv.org/abs/nucl-th/9806082"
},
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