dorsal/arxiv
View SchemaMicroscopic description of Gamow-Teller transitions in middle pf--shell nuclei by a realistic shell model calculation
| Authors | H. Nakada, T. Sebe |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9605034 |
| URL | https://arxiv.org/abs/nucl-th/9605034 |
| DOI | 10.1088/0954-3899/22/9/008 |
| Journal | J.Phys.G22:1349-1362,1996 |
Abstract
GT transitions in $N=28\sim 30$ nuclei are studied in terms of a large-scale realistic shell-model calculation, by using Towner's microscopic parameters. $B({\rm GT})$ values to low-lying final states are reproduced with a reasonable accuracy. Several gross properties with respect to the GT transitions are investigated with this set of the wavefunctions and the operator. While the calculated total GT$^-$ strengths show no apparent disagreement with the measured ones, the calculated total GT$^+$ strengths are somewhat larger than those obtained from charge-exchange experiments. Concerning the Ikeda sum-rule, the proportionality of $S_{\rm GT}$ to $(N-Z)$ persists to an excellent approximation, with a quenching factor of 0.68. For the relative GT$^-$ strengths among possible isospin components, the lowest isospin component gathers greater fraction than expected by the squared CG coefficients of the isospin coupling. It turns out that these relative strengths are insensitive to the size of model space. Systematics of the summed $B({\rm GT})$ values are discussed for each isospin component.
{
"annotation_id": "daf18ed6-f108-497a-93b5-654866d81496",
"date_created": "2026-03-02T18:00:18.782000Z",
"date_modified": "2026-03-02T18:00:18.782000Z",
"file_hash": "46a768dfc281c2b9a73d38e0a7a49ee3c1aadb2fdb96282f1c4f10716ac3df4c",
"private": false,
"record": {
"abstract": "GT transitions in $N=28\\sim 30$ nuclei are studied in terms of a large-scale\nrealistic shell-model calculation, by using Towner\u0027s microscopic parameters.\n$B({\\rm GT})$ values to low-lying final states are reproduced with a reasonable\naccuracy. Several gross properties with respect to the GT transitions are\ninvestigated with this set of the wavefunctions and the operator. While the\ncalculated total GT$^-$ strengths show no apparent disagreement with the\nmeasured ones, the calculated total GT$^+$ strengths are somewhat larger than\nthose obtained from charge-exchange experiments. Concerning the Ikeda sum-rule,\nthe proportionality of $S_{\\rm GT}$ to $(N-Z)$ persists to an excellent\napproximation, with a quenching factor of 0.68. For the relative GT$^-$\nstrengths among possible isospin components, the lowest isospin component\ngathers greater fraction than expected by the squared CG coefficients of the\nisospin coupling. It turns out that these relative strengths are insensitive to\nthe size of model space. Systematics of the summed $B({\\rm GT})$ values are\ndiscussed for each isospin component.",
"arxiv_id": "nucl-th/9605034",
"authors": [
"H. Nakada",
"T. Sebe"
],
"categories": [
"nucl-th"
],
"doi": "10.1088/0954-3899/22/9/008",
"journal_ref": "J.Phys.G22:1349-1362,1996",
"title": "Microscopic description of Gamow-Teller transitions in middle pf--shell nuclei by a realistic shell model calculation",
"url": "https://arxiv.org/abs/nucl-th/9605034"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "55d183a0-02fa-4040-95f0-206504ad4e6a",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}