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; Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
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| 刊名 | NUCLEAR PHYSICS A
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| 出版日期 | 2003 |
| 卷号 | 723期号:40972页码:375-386 |
| 关键词 | Drip-line Nuclei Core Polarization Resonances Strength |
| ISSN号 | 0375-9474 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000183854700004 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13243]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, 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(40972):375-386. |
| APA | Zhou, XR,Zhao, EG,Dong, BG,Zhang, XZ,Long, GL,&Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China..(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(40972),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 723.40972(2003):375-386. |
入库方式： OAI收割
来源：理论物理研究所
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