dorsal/arxiv
View SchemaMicroscopic Nuclear Level Densities from Fe to Ge by the Shell Model Monte Carlo Method
| Authors | H. Nakada, Y. Alhassid |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9809066 |
| URL | https://arxiv.org/abs/nucl-th/9809066 |
| DOI | 10.1016/S0370-2693(98)00911-3 |
| Journal | Phys.Lett. B436 (1998) 231-237 |
Abstract
We calculate microscopically total and parity-projected level densities for $\beta$-stable even-even nuclei between Fe and Ge, using the shell model Monte Carlo methods in the complete $(pf+0g_{9/2})$-shell. A single-particle level density parameter $a$ and backshift parameter $\Delta$ are extracted by fitting the calculated densities to a backshifted Bethe formula, and their systematics are studied across the region. Shell effects are observed in $\Delta$ for nuclei with Z=28 or N=28 and in the behavior of $A/a$ as a function of the number of neutrons. We find a significant parity-dependence of the level densities for nuclei with $A \alt 60$, which diminishes as $A$ increases.
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"abstract": "We calculate microscopically total and parity-projected level densities for\n$\\beta$-stable even-even nuclei between Fe and Ge, using the shell model Monte\nCarlo methods in the complete $(pf+0g_{9/2})$-shell. A single-particle level\ndensity parameter $a$ and backshift parameter $\\Delta$ are extracted by fitting\nthe calculated densities to a backshifted Bethe formula, and their systematics\nare studied across the region. Shell effects are observed in $\\Delta$ for\nnuclei with Z=28 or N=28 and in the behavior of $A/a$ as a function of the\nnumber of neutrons. We find a significant parity-dependence of the level\ndensities for nuclei with $A \\alt 60$, which diminishes as $A$ increases.",
"arxiv_id": "nucl-th/9809066",
"authors": [
"H. Nakada",
"Y. Alhassid"
],
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"nucl-th"
],
"doi": "10.1016/S0370-2693(98)00911-3",
"journal_ref": "Phys.Lett. B436 (1998) 231-237",
"title": "Microscopic Nuclear Level Densities from Fe to Ge by the Shell Model Monte Carlo Method",
"url": "https://arxiv.org/abs/nucl-th/9809066"
},
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