Nen beta-delayed proton decays in the rare-earth region near the proton drip line
文献类型：期刊论文
| 作者 | Li, ZK ; Xie, YX; Yu, Y; Pan, QY; Wang, CF; Xu, SW; Xing, JP; Ma, RC; Ge, YX; Wang, XD
|
| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
 |
| 出版日期 | 2000-12-01 |
| 卷号 | 24页码:73-80 |
| 关键词 | proton drip-line beta-delayed proton decay beta-delayed proton precursors ground-state spin and parity |
| ISSN号 | 0254-3052 |
| 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 esimated proton branching ratios to the final states in "daughter" nuclei for the precursor 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 parties of Ce-121, Nd-125, 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, respectly. The consistency between the experimental spin-parity assignment and the predicted Nilsson diagrams indirectly indicates that ground states of Ce-121, Nd-125, Sm-129, Gd-135, Gd-137 and Dy-139 are highly deformed with beta(2) similar to 0.3. |
| WOS关键词 | ROTATIONAL BANDS ; NUCLEAR ; DEFORMATION ; ISOTOPES |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000174020800015 |
| 出版者 | SCIENCE CHINA PRESS |
| 公开日期 | 2010-10-29 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/971]  |
| 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 73000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, ZK,Xie, YX,Yu, Y,et al. Nen beta-delayed proton decays in the rare-earth region near the proton drip line[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2000,24:73-80. |
| APA | Li, ZK.,Xie, YX.,Yu, Y.,Pan, QY.,Wang, CF.,...&Wang, XD.(2000).Nen beta-delayed proton decays in the rare-earth region near the proton drip line.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,24,73-80. |
| MLA | Li, ZK,et al."Nen beta-delayed proton decays in the rare-earth region near the proton drip line".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 24(2000):73-80. |
入库方式： OAI收割
来源：近代物理研究所
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