Experimental study of two-proton correlated emission from S-29 excited states

doi:10.1103/PhysRevC.80.014310

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	Experimental study of two-proton correlated emission from S-29 excited states
	Lin, C. J.1; Xu, X. X.1; Jia, H. M.1; Yang, F.1; Jia, F.1; Zhang, S. T.1; Liu, Z. H.1; Zhang, H. Q.1; Xu, H. S.2 ; Sun, Z. Y.2
刊名	PHYSICAL REVIEW C
	2009-07-01
卷号	80 期号:1 页码:8
ISSN号	0556-2813
DOI	10.1103/PhysRevC.80.014310
英文摘要	An experiment of a S-29 beam bombarding a Au-197 target at an energy of 49.2 MeV/u has been performed to study the two-proton correlated emission from S-29 excited states. Complete-kinematics measurements were carried out in the experiment. The relative momentum, opening angle, and relative energy of two protons, as well as the invariant mass of the final system, were deduced by relativistic-kinematics reconstruction. The Si-27-p-p coincident events were picked out under strict conditions and the phenomenon of p-p correlations was observed among these events. 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 emission were taken into account. Associated with the Monte Carlo simulations, the present results show that two protons emitted from the excited states between 9.6 MeV and 10.4 MeV exhibit the features of He-2 cluster decay with a branching ratio of 29(-11)(+10)%.
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	PROTON ; DECAY ; RADIOACTIVITY ; HALO ; EXCITATION ; ISOTOPES ; NUCLEI ; BE-6
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000268618500024
资助机构	National Natural Science Foundation of China ; Major State Basic Research Developing Program
公开日期	2010-10-29
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/5301]
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_实验物理中心近代物理研究所_兰州重离子研究装置中国科学院近代物理研究所
通讯作者	Lin, C. J.
作者单位	1.China Inst Atom Energy, Beijing 102413, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 73000, Peoples R China
推荐引用方式 GB/T 7714	Lin, C. J.,Xu, X. X.,Jia, H. M.,et al. Experimental study of two-proton correlated emission from S-29 excited states[J]. PHYSICAL REVIEW C,2009,80(1):8.
APA	Lin, C. J..,Xu, X. X..,Jia, H. M..,Yang, F..,Jia, F..,...&Zhan, W. L..(2009).Experimental study of two-proton correlated emission from S-29 excited states.PHYSICAL REVIEW C,80(1),8.
MLA	Lin, C. J.,et al."Experimental study of two-proton correlated emission from S-29 excited states".PHYSICAL REVIEW C 80.1(2009):8.