Collective properties of low-lying octupole excitations in Pb-208(82)123, Ca-60(20)40 and O-28(8)20
文献类型：期刊论文
| 作者 | Zhou, XR; Zhao, EG; Dong, BG; Zhang, XZ; Long, GL |
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2003-08-11 |
| 卷号 | 723页码:375-386 |
| 关键词 | neutron drip-line nuclei collective excitations particle-vibration coupling transition current transition density |
| ISSN号 | 0375-9474 |
| DOI | 10.1016/S0375-9474(03)01366-6 |
| 英文摘要 | The octupole strengths of three nuclei: beta-stable nucleus Pb-208(82)126, neutron skin nucleus Ca-60(20)40 and neutron drip line nucleus O-28(8)20 are studied by using the self-consistent Hartree-Fock calculation with the random phase approximation. The collective properties of low-lying excitations are analyzed by particle-vibration coupling. The results show that there is the coexistence of the collective excitations and the decoupled strong continuum strength near the threshold in the lowest isoscalar states in Ca-60(20)40 and O-28(8)20. For these three nuclei, both the low-lying isoscalar states and giant isoscalar resonance carry isovector strength. The ratio B(IV)/B(IS) is checked and it is found that, for Pb-208(82)126, the ratio is equal to ((N - Z)/A)(2) in good accuracy, while for Ca-60(20)40 and O-28(8)20, the ratios are much larger than ((N - Z)/A)(2). The study shows that the enhancement of the ratio is due to the excess neutrons that have small binding energies in Ca-60(20)40 and O-28(8)20 (C) 2003 Elsevier Science B.V. All rights reserved. |
| WOS关键词 | DRIP-LINE NUCLEI ; CORE POLARIZATION ; RESONANCES ; STRENGTH |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000183854700004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/57027]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Long, GL |
| 作者单位 | 1.Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China 3.China Inst Atom Energy, Beijing, Peoples R China 4.Natl Lab Heavy Ion Accelerator, Ctr Theoret Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, XR,Zhao, EG,Dong, BG,et al. Collective properties of low-lying octupole excitations in Pb-208(82)123, Ca-60(20)40 and O-28(8)20[J]. NUCLEAR PHYSICS A,2003,723:375-386. |
| APA | Zhou, XR,Zhao, EG,Dong, BG,Zhang, XZ,&Long, GL.(2003).Collective properties of low-lying octupole excitations in Pb-208(82)123, Ca-60(20)40 and O-28(8)20.NUCLEAR PHYSICS A,723,375-386. |
| MLA | Zhou, XR,et al."Collective properties of low-lying octupole excitations in Pb-208(82)123, Ca-60(20)40 and O-28(8)20".NUCLEAR PHYSICS A 723(2003):375-386. |
入库方式： OAI收割
来源：近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。