dorsal/arxiv
View SchemaS-matrix and R-matrix determination of the low-energy He-5 and Li-5 resonance parameters
| Authors | Attila Csoto, G. M. Hale |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9608007 |
| URL | https://arxiv.org/abs/nucl-th/9608007 |
| DOI | 10.1103/PhysRevC.55.536 |
| Journal | Phys.Rev.C55:536-539,1997 |
Abstract
We study the low-energy 3/2- and 1/2- states of He-5 and Li-5 in a microscopic cluster model. The scattering phase shifts of Bond (alpha+n) and of Schwandt (alpha+p), respectively, are reproduced well. We determine the resonance parameters by localizing the poles of the analytically continued S-matrix at complex energies. Our results differ from conventional R-matrix resonance parameters, which were extracted from experimental data using the definition of a resonance based on the positions and widths of reaction cross section peaks. However, they nicely agree with the results of an extended R-matrix method which works at complex energies.
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"abstract": "We study the low-energy 3/2- and 1/2- states of He-5 and Li-5 in a\nmicroscopic cluster model. The scattering phase shifts of Bond (alpha+n) and of\nSchwandt (alpha+p), respectively, are reproduced well. We determine the\nresonance parameters by localizing the poles of the analytically continued\nS-matrix at complex energies. Our results differ from conventional R-matrix\nresonance parameters, which were extracted from experimental data using the\ndefinition of a resonance based on the positions and widths of reaction cross\nsection peaks. However, they nicely agree with the results of an extended\nR-matrix method which works at complex energies.",
"arxiv_id": "nucl-th/9608007",
"authors": [
"Attila Csoto",
"G. M. Hale"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.55.536",
"journal_ref": "Phys.Rev.C55:536-539,1997",
"title": "S-matrix and R-matrix determination of the low-energy He-5 and Li-5 resonance parameters",
"url": "https://arxiv.org/abs/nucl-th/9608007"
},
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