dorsal/arxiv
View SchemaBeyond-mean-field-model analysis of low-spin normal-deformed and superdeformed collective states of S32, Ar36, Ar38 and Ca40
| Authors | M. Bender, H. Flocard, P. -H. Heenen |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0305021 |
| URL | https://arxiv.org/abs/nucl-th/0305021 |
| DOI | 10.1103/PhysRevC.68.044321 |
| Journal | Phys.Rev. C68 (2003) 044321 |
Abstract
We investigate the coexistence of spherical, deformed and superdeformed states at low spin in S32, Ar36, Ar38 and Ca40. The microscopic states are constructed by configuration mixing of BCS states projected on good particle number and angular momentum. The BCS states are themselves obtained from Hartree-Fock BCS calculations using the Skyrme interaction SLy6 for the particle-hole channel, and a density-dependent contact force in the pairing channel. The same interaction is used within the Generator Coordinate Method to determine the configuration mixing and calculate the properties of even-spin states with positive parity. Our calculations underestimate moments of inertia. Nevertheless, for the four nuclei, the global structural properties of the states of normal deformation as well as the recently discovered superdeformed bands up to spin 6 are correctly reproduced with regard to both the energies and the transition rates.
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"abstract": "We investigate the coexistence of spherical, deformed and superdeformed\nstates at low spin in S32, Ar36, Ar38 and Ca40. The microscopic states are\nconstructed by configuration mixing of BCS states projected on good particle\nnumber and angular momentum. The BCS states are themselves obtained from\nHartree-Fock BCS calculations using the Skyrme interaction SLy6 for the\nparticle-hole channel, and a density-dependent contact force in the pairing\nchannel. The same interaction is used within the Generator Coordinate Method to\ndetermine the configuration mixing and calculate the properties of even-spin\nstates with positive parity. Our calculations underestimate moments of inertia.\nNevertheless, for the four nuclei, the global structural properties of the\nstates of normal deformation as well as the recently discovered superdeformed\nbands up to spin 6 are correctly reproduced with regard to both the energies\nand the transition rates.",
"arxiv_id": "nucl-th/0305021",
"authors": [
"M. Bender",
"H. Flocard",
"P. -H. Heenen"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.68.044321",
"journal_ref": "Phys.Rev. C68 (2003) 044321",
"title": "Beyond-mean-field-model analysis of low-spin normal-deformed and superdeformed collective states of S32, Ar36, Ar38 and Ca40",
"url": "https://arxiv.org/abs/nucl-th/0305021"
},
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