beta-decay study of the T-z =-2 proton-rich nucleus Mg-20

doi:10.1103/PhysRevC.95.014314

	beta-decay study of the T-z =-2 proton-rich nucleus Mg-20
	Chen, J.5; Sun, L. J.3; Xu, X. X.3; Fang, D. Q.4; Lin, C. J.1,3; Wang, J. S.5; Li, Z. H.2; Wang, Y. T.4; Li, J.2; Yang, L.3
刊名	PHYSICAL REVIEW C
	2017-01-13
卷号	95 页码:8
ISSN号	2469-9985
DOI	10.1103/PhysRevC.95.014314
英文摘要	The beta decay of the drip-line nucleus Mg-20 gives important information on key astrophysical resonances in 20Na, which are relevant to the onset of the rapid proton capture process. A detailed beta-decay spectroscopic study of 20Mg was performed by a continuous-implantation method. A detection system was specially developed for charged-particle decay studies, giving improved spectroscopic information including the delayed proton energies, the half-life of 20Mg, the excitation energies, the branching ratios, and the log ft values for the states in Na-20 populated in the beta decay of Mg-20. A new proton branch was observed and the corresponding excited state in 20Na was proposed. The large isospin asymmetry for the mirror decays of Mg-20 and O-20 was also well reproduced. To resolve the long-standing problem about the astrophysically interesting 2645 keVresonance in Na-20 convincingly, a higher-statistics measurement may still be needed.
资助项目	National Basic Research Program of China[2013CB834404] ; National Natural Science Foundation of China[11375268] ; National Natural Science Foundation of China[11475263] ; National Natural Science Foundation of China[U1432246] ; National Natural Science Foundation of China[U1432127] ; National Natural Science Foundation of China[11505293] ; National Natural Science Foundation of China[11635015]
WOS关键词	NE-19(P,GAMMA)NA-20 REACTION-RATE ; CHARGE-EXCHANGE REACTIONS ; STELLAR REACTION-RATE ; HOT CNO CYCLE ; ASTROPHYSICAL INTEREST ; RADIOACTIVE BEAMS ; LEVEL STRUCTURE ; DATA SHEETS ; RP-PROCESS ; NA-20
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000391860300003
资助机构	National Basic Research Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.impcas.ac.cn/handle/113462/23325]
专题	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
通讯作者	Xu, X. X.
作者单位	1.Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Peoples R China 2.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 3.China Inst Atom Energy, Dept Nucl Phys, Beijing 102413, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, J.,Sun, L. J.,Xu, X. X.,et al. beta-decay study of the T-z =-2 proton-rich nucleus Mg-20[J]. PHYSICAL REVIEW C,2017,95:8.
APA	Chen, J..,Sun, L. J..,Xu, X. X..,Fang, D. Q..,Lin, C. J..,...&Zhan, W. L..(2017).beta-decay study of the T-z =-2 proton-rich nucleus Mg-20.PHYSICAL REVIEW C,95,8.
MLA	Chen, J.,et al."beta-decay study of the T-z =-2 proton-rich nucleus Mg-20".PHYSICAL REVIEW C 95(2017):8.