dorsal/arxiv
View SchemaBulk properties of rotating nuclei and the validity of the liquid drop model at finite angular momenta
| Authors | J. Piperova, D. Samsoen, P. Quentin, K. Bencheikh, J. Bartel, J. Meyer |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9903068 |
| URL | https://arxiv.org/abs/nucl-th/9903068 |
| DOI | 10.1016/S0375-9474(99)00159-1 |
| Journal | Nucl.Phys. A652 (1999) 142-163 |
Abstract
Out of self-consistent semi-classical calculations performed within the so-called Extended Thomas-Fermi approach for 212 nuclei at all even angular momentum values I ranging between 0 and 80 \hbar and using the Skyrme SkM* effective force, the I-dependence of associated liquid drop model parameters has been studied. The latter have been obtained trough separate fits of the calculated values of the strong interaction as well as direct and exchange Coulomb energies. The theoretical data basis so obtained, has allowed to make a rough quantitative assessment of the variation with I of the usual volume and surface energy parameters up to spin of \sim 30-40 \hbar. As a result of the combined variation of the surface and Coulomb energies, it has been shown that this I-dependence results in a significant enhancement of the fission stability of very heavy nuclei, balancing thus partially the well-known instability due to centrifugal forces.
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"abstract": "Out of self-consistent semi-classical calculations performed within the\nso-called Extended Thomas-Fermi approach for 212 nuclei at all even angular\nmomentum values I ranging between 0 and 80 \\hbar and using the Skyrme SkM*\neffective force, the I-dependence of associated liquid drop model parameters\nhas been studied. The latter have been obtained trough separate fits of the\ncalculated values of the strong interaction as well as direct and exchange\nCoulomb energies. The theoretical data basis so obtained, has allowed to make a\nrough quantitative assessment of the variation with I of the usual volume and\nsurface energy parameters up to spin of \\sim 30-40 \\hbar. As a result of the\ncombined variation of the surface and Coulomb energies, it has been shown that\nthis I-dependence results in a significant enhancement of the fission stability\nof very heavy nuclei, balancing thus partially the well-known instability due\nto centrifugal forces.",
"arxiv_id": "nucl-th/9903068",
"authors": [
"J. Piperova",
"D. Samsoen",
"P. Quentin",
"K. Bencheikh",
"J. Bartel",
"J. Meyer"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(99)00159-1",
"journal_ref": "Nucl.Phys. A652 (1999) 142-163",
"title": "Bulk properties of rotating nuclei and the validity of the liquid drop model at finite angular momenta",
"url": "https://arxiv.org/abs/nucl-th/9903068"
},
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