New beta-delayed proton decays in the rare-earth region near the proton drip line
文献类型：期刊论文
| 作者 | Zhang, TM; Xu, SW ; Li, ZK; Xie, YX; Yu, Y; Pan, QY; Wang, CF; Xing, JP; Ma, RC; Ge, YX
|
| 刊名 | SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
 |
| 出版日期 | 2000-08-01 |
| 卷号 | 43期号:9页码:885-891 |
| 关键词 | proton-drip line beta-delayed proton decay beta-delayed proton precursors ground-state spin and parity |
| ISSN号 | 1006-9283 |
| 英文摘要 | The beta-delayed proton precursors Nd-125, Pm-128, Sm-129, Gd-137 and Dy-139 near the proton drip line were produced by the irradiation of Mo-92, Ru-96 and Cd-106 with an Ar-36 beam, and conclusively identified for the first time by using proton-gamma coincidence in combination with a He-jet tape transport system. Their half-lives were determined to be 0.60(15)s,1.0(3)s,0.55(10)s,2.2(2)s and 0.6 (2)s, respectively. The measured energy spectra of beta-delayed protons and estimated proton branching ratios to the final states in "daughter" nuclei for the precursors Nd-125, Sm-129, Gd-137 and Dy-139, as well as the previously reported ones for the precursors Gd-135 and Ce-121, were fitted by a statistical model calculation. The ground-state spins and parities of Ce-121, 125Nd, Sm-129, Gd-135, Gd-137 and Dy-139 were then assigned as 5/2 (+/-),5/2 (+/-), 1/2 (+/-) (or 3/2 (+)),5/2 (+),7/2 (+/-) and 7/2, respectively. The consistency between the experimental spin-parity assignment and the predicted Nilsson diagrams indirectly indicates that the ground states of Ce-121, Nd-125, Sm-129, Gd-135, Gd-137 and Dy-139 and highly deformed with beta(2) similar to 0.3. |
| WOS关键词 | ROTATIONAL BANDS ; PRECURSOR CE-121 ; NUCLEAR ; DEFORMATION ; ISOTOPES |
| WOS研究方向 | Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000089197300013 |
| 出版者 | SCIENCE PRESS |
| 公开日期 | 2010-10-29 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/1959]  |
| 专题 | 近代物理研究所_近代物理研究所知识存储（2010之前） 近代物理研究所_实验物理中心 |
| 通讯作者 | Xu, SW |
| 作者单位 | Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, TM,Xu, SW,Li, ZK,et al. New beta-delayed proton decays in the rare-earth region near the proton drip line[J]. SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY,2000,43(9):885-891. |
| APA | Zhang, TM.,Xu, SW.,Li, ZK.,Xie, YX.,Yu, Y.,...&Ge, YX.(2000).New beta-delayed proton decays in the rare-earth region near the proton drip line.SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY,43(9),885-891. |
| MLA | Zhang, TM,et al."New beta-delayed proton decays in the rare-earth region near the proton drip line".SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY 43.9(2000):885-891. |
入库方式： OAI收割
来源：近代物理研究所
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