Experimental research into the two-proton emissions from Ne-17,Ne-18, P-28 and S-28,S-29 | |
Lin ChengJian1; Xu XinXing1; Jia HuiMing1; Yang Feng1; Jia Fei1; Wu ZhenDong1; Zhang ShiTao1; Liu ZuHua1; Zhang HuanQiao1; Xu HuShan2 | |
刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY |
2011-08-01 | |
卷号 | 54页码:S73-S80 |
关键词 | Two-proton Emission Radioactive Ion Beam Complete-kinematics Measurement He-2 Cluster Decay Three-body Phase-space Decay Two-body Sequential Decay |
ISSN号 | 1674-7348 |
DOI | 10.1007/s11433-011-4431-9 |
英文摘要 | Two-proton emissions from the excited states of Ne-17,Ne-18, P-28 and S-28,S-29 were investigated experimentally by the radioactive beams bombarding on the Au-197 target via the Coulomb excitation. The complete-kinematics measurements were actualized by the stacks of silicon-strip detectors and CsI+PIN array detectors. The invariant mass of final systems as well as the relative momentum, opening angle, and relative energy of the two emitted protons was reconstructed under the framework of relativistic kinematics. Visible proton-proton correlations were observed in these systems. The mechanisms of two-proton emission were analyzed in a simple schematic model, in which the extreme decay modes like He-2 cluster emission, three-body phase-space decay, and two-body sequential decay were taken into account. With the help of Monte-Carlo simulations, the two protons emitted from the 6.15 MeV excited state of Ne-18 and the excited states in the energy region of 9.6-10.4 MeV of S-29, respectively, exhibited prominent features of He-2 cluster decay while for the other cases, no obvious diproton emissions were observed. |
资助项目 | National Natural Science Foundation of China[10675169] ; National Natural Science Foundation of China[10735100] ; National Natural Science Foundation of China[10727505] ; Major State Basic Research Developing Program[2007CB815003] |
WOS关键词 | Light Nuclei ; Decay ; Proton ; State ; Resonance ; Isotopes ; Ne-17 ; Be-6 ; S-29 ; Halo |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:000302529300013 |
资助机构 | National Natural Science Foundation of China ; Major State Basic Research Developing Program |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.186/handle/113462/34226] |
专题 | 近代物理研究所_兰州重离子研究装置 近代物理研究所_实验物理中心 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.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Lin ChengJian,Xu XinXing,Jia HuiMing,et al. Experimental research into the two-proton emissions from Ne-17,Ne-18, P-28 and S-28,S-29[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2011,54:S73-S80. |
APA | Lin ChengJian.,Xu XinXing.,Jia HuiMing.,Yang Feng.,Jia Fei.,...&Zhan WenLong.(2011).Experimental research into the two-proton emissions from Ne-17,Ne-18, P-28 and S-28,S-29.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,54,S73-S80. |
MLA | Lin ChengJian,et al."Experimental research into the two-proton emissions from Ne-17,Ne-18, P-28 and S-28,S-29".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 54(2011):S73-S80. |
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