dorsal/arxiv
View SchemaSupernova electron capture rates on odd-odd nuclei
| Authors | K. Langanke, G. Martinez-Pinedo |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9809082 |
| URL | https://arxiv.org/abs/nucl-th/9809082 |
| DOI | 10.1016/S0370-2693(99)00363-9 |
| Journal | Phys.Lett. B453 (1999) 187-193 |
Abstract
At densities between 10^8 and 10^10} g/cm^3 electron capture in a presupernova collapse is believed to mainly occur on odd-odd nuclei. We have derived the rates for six of the most important electron capturing nuclei, {54,56,58}Mn and {56,58,60}Co, based on calculations of the Gamow-Teller strength distributions for the ground states and first excited states. These calculations have been performed by shell model diagonalization in the pf shell using a recently modified version of the KB3 interaction. The shell model rates are noticeably smaller than the presently adopted rates as the latter have been derived by placing the Gamow-Teller (GT) resonance at too low excitation energies.
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"abstract": "At densities between 10^8 and 10^10} g/cm^3 electron capture in a\npresupernova collapse is believed to mainly occur on odd-odd nuclei. We have\nderived the rates for six of the most important electron capturing nuclei,\n{54,56,58}Mn and {56,58,60}Co, based on calculations of the Gamow-Teller\nstrength distributions for the ground states and first excited states. These\ncalculations have been performed by shell model diagonalization in the pf shell\nusing a recently modified version of the KB3 interaction. The shell model rates\nare noticeably smaller than the presently adopted rates as the latter have been\nderived by placing the Gamow-Teller (GT) resonance at too low excitation\nenergies.",
"arxiv_id": "nucl-th/9809082",
"authors": [
"K. Langanke",
"G. Martinez-Pinedo"
],
"categories": [
"nucl-th",
"astro-ph"
],
"doi": "10.1016/S0370-2693(99)00363-9",
"journal_ref": "Phys.Lett. B453 (1999) 187-193",
"title": "Supernova electron capture rates on odd-odd nuclei",
"url": "https://arxiv.org/abs/nucl-th/9809082"
},
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