The Gamow-Teller resonance in finite nuclei in the relativistic random phase approximation
文献类型：期刊论文
| 作者 | Ma, ZY; Chen, BQ; Van Giai, N; Suzuki, T |
| 刊名 | EUROPEAN PHYSICAL JOURNAL A
 |
| 出版日期 | 2004-06-01 |
| 卷号 | 20页码:429-433 |
| ISSN号 | 1434-6001 |
| DOI | 10.1140/epja/i2003-10167-2 |
| 英文摘要 | Gamow-Teller (GT) resonances in finite nuclei are studied in a fully consistent relativistic random phase approximation (RPA) framework. A relativistic form of the Landau-Migdal contact interaction in the spin-isospin channel is adopted, which has a vector part as well as a time-like component. This choice ensures that the GT excitation energy in nuclear matter is correctly reproduced in the non-relativistic limit. The GT response functions of doubly magic nuclei (48)Ca, (90)Zr and (208)Pb are calculated rising the parameter set NU and g' = 0.6. It is found that the effects related to Dirac sea states account for a reduction of 6-7% in the GT sum rule. The quenching of the GT strength in finite nuclei implies that the value of g' in the relativistic model might be enlarged about 7%. The time component in the relativistic form of the Landau-Migdal force plays a little role in GT resonance energies. |
| WOS关键词 | MEAN-FIELD THEORY ; STRENGTH ; EXCITATIONS ; SCATTERING ; CONTINUUM |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000222562800012 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.186/handle/113462/24802]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | 1.China Inst Atom Energy, Beijing 102413, Peoples R China 2.Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 3.Inst Phys Nucl, IN2P3, CNRS, F-91406 Orsay, France 4.Univ Fukui, Dept Appl Phys, Fukui 9108507, Japan 5.RIKEN, Wako, Saitama 3510198, Japan |
| 推荐引用方式 GB/T 7714 | Ma, ZY,Chen, BQ,Van Giai, N,et al. The Gamow-Teller resonance in finite nuclei in the relativistic random phase approximation[J]. EUROPEAN PHYSICAL JOURNAL A,2004,20:429-433. |
| APA | Ma, ZY,Chen, BQ,Van Giai, N,&Suzuki, T.(2004).The Gamow-Teller resonance in finite nuclei in the relativistic random phase approximation.EUROPEAN PHYSICAL JOURNAL A,20,429-433. |
| MLA | Ma, ZY,et al."The Gamow-Teller resonance in finite nuclei in the relativistic random phase approximation".EUROPEAN PHYSICAL JOURNAL A 20(2004):429-433. |
入库方式： OAI收割
来源：近代物理研究所
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