dorsal/arxiv
View SchemaA Shell Model Description of the Decay Out of the Super-Deformed Band of 36Ar
| Authors | E. Caurier, F. Nowacki, A. Poves |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0502068 |
| URL | https://arxiv.org/abs/nucl-th/0502068 |
| DOI | 10.1103/PhysRevLett.95.042502 |
| Journal | Phys.Rev.Lett. 95 (2005) 042502 |
Abstract
Large scale shell model calculations in two major oscillator shells (sd and pf) describe simultaneously the super-deformed excited band of 36Ar and its low-lying states of dominant sd character. In addition, several two particle two hole states and a side band of negative parity are also well reproduced. We explain the appearance of the super-deformed band at such low excitation energy as a consequence of the very large correlation energy of the configurations with many particles and many holes (np-nh) relative to the normal filling of the spherical mean field orbits (0p-0h). We study the mechanism of mixing between these different configurations, to understand why the super-deformed band survives and how it finally decays into the low-lying sd-dominated states via the indirect mixing of the 0p-0h and 4p-4h configurations.
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"abstract": "Large scale shell model calculations in two major oscillator shells (sd and\npf) describe simultaneously the super-deformed excited band of 36Ar and its\nlow-lying states of dominant sd character. In addition, several two particle\ntwo hole states and a side band of negative parity are also well reproduced. We\nexplain the appearance of the super-deformed band at such low excitation energy\nas a consequence of the very large correlation energy of the configurations\nwith many particles and many holes (np-nh) relative to the normal filling of\nthe spherical mean field orbits (0p-0h). We study the mechanism of mixing\nbetween these different configurations, to understand why the super-deformed\nband survives and how it finally decays into the low-lying sd-dominated states\nvia the indirect mixing of the 0p-0h and 4p-4h configurations.",
"arxiv_id": "nucl-th/0502068",
"authors": [
"E. Caurier",
"F. Nowacki",
"A. Poves"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevLett.95.042502",
"journal_ref": "Phys.Rev.Lett. 95 (2005) 042502",
"title": "A Shell Model Description of the Decay Out of the Super-Deformed Band of 36Ar",
"url": "https://arxiv.org/abs/nucl-th/0502068"
},
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