CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
beta-decay study of the T-z =-2 proton-rich nucleus Mg-20
Sun, LJ; Xu, XX; Fang, DQ; Lin, CJ; Wang, JS; Li, ZH; Wang, YT; Li, J; Yang, L; Ma, NR; Wang, K; Zang, HL; Wang, HW; Li, C; Shi, CZ; Nie, MW; Li, XF; Li, H; Ma, JB; Ma, P; Jin, SL; Huang, MR; Bai, Z; Wang, JG; Yang, F; Jia, HM; Zhang, HQ; Liu, ZH; Bao, PF; Wang, DX; Yang, YY; Zhou, YJ; Ma, WH; Chen, J; Ma, YG; Zhang, YH; Zhou, XH; Xu, HS; Xiao, GQ; Zhan, WL
Source PublicationPHYSICAL REVIEW C
AbstractThe 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.
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WOS IDWOS:000391860300003
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Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
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GB/T 7714
Sun, LJ,Xu, XX,Fang, DQ,et al. beta-decay study of the T-z =-2 proton-rich nucleus Mg-20[J]. PHYSICAL REVIEW C,2017,95(1):-.
APA Sun, LJ.,Xu, XX.,Fang, DQ.,Lin, CJ.,Wang, JS.,...&Zhan, WL.(2017).beta-decay study of the T-z =-2 proton-rich nucleus Mg-20.PHYSICAL REVIEW C,95(1),-.
MLA Sun, LJ,et al."beta-decay study of the T-z =-2 proton-rich nucleus Mg-20".PHYSICAL REVIEW C 95.1(2017):-.
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