Experimental study of the beta-delayed neutron decay of N-21
| Data(s) |
2009
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|---|---|
| Resumo |
The first spectroscopic study for the beta decay of N-21 is carried out based on beta-n, beta-gamma, and beta-n-gamma coincidence measurements. The neutron-rich N-21 nuclei are produced by the fragmentation of the E/A=68.8 MeV Mg-26 primary beam on a thick Be-9 target and are implanted into a thin plastic scintillator that also plays the role of beta detector. The time of flight of the emitted neutrons following the beta decay are measured by the surrounding neutron sphere and neutron wall arrays. In addition, four clover germanium detectors are used to detect the beta-delayed gamma rays. Thirteen new beta-delayed neutron groups are observed with a total branching ratio of 90.5 +/- 4.2%. The half-life for the beta decay of N-21 is determined to be 82.9 +/- 7.5 ms. The level scheme of O-21 is deduced up to about 9 MeV excitation energy. The experimental results for the beta decay of N-21 are compared to the shell-model calculations. National Basic Research Program (973 program) of China 2007CB815002 National Natural Science Foundation of China 10775003 10475004 10735010 10775005 10875002 10827505 |
| Identificador | |
| Idioma(s) |
英语 |
| Fonte |
Li, ZH (Li, Z. H.); Lou, JL (Lou, J. L.); Ye, YL (Ye, Y. L.); Hua, H (Hua, H.); Jiang, DX (Jiang, D. X.); Li, XQ (Li, X. Q.); Zhang, SQ (Zhang, S. Q.); Zheng, T (Zheng, T.); Ge, YC (Ge, Y. C.); Kong, Z (Kong, Z.); Lv, LH (Lv, L. H.); Li, C (Li, C.); Lu, F (Lu, F.); Fan, FY (Fan, F. Y.); Li, ZY (Li, Z. Y.); Cao, ZX (Cao, Z. X.); Ma, LY (Ma, L. Y.); Faisal, Q (Faisal, Q.); Xu, HS (Xu, H. S.); Hu, ZG (Hu, Z. G.); Wang, M (Wang, M.); Lei, XG (Lei, X. G.); Duan, LM (Duan, L. M.); Xiao, ZG (Xiao, Z. G.); Zhan, WL (Zhan, W. L.); Xiao, GQ (Xiao, G. Q.); Huang, TH (Huang, T. H.); Fu, F (Fu, F.); Zhang, XH (Zhang, X. H.); Zheng, C (Zheng, C.); Yu, YH (Yu, Y. H.); Tu, XL (Tu, X. L.); Zhang, YP (Zhang, Y. P.); Yang, YY (Yang, Y. Y.); Zhang, HB (Zhang, H. B.); Thang, B (Thang, B.); Tian, YL (Tian, Y. L.); Ouang, Z (Ouang, Z.); Huang, MR (Huang, M. R.); Xu, ZG (Xu, Z. G.); Yue, K (Yue, K.); Gao, Q (Gao, Q.) .Experimental study of the beta-delayed neutron decay of N-21 ,PHYSICAL REVIEW C,2009,80(5):054315 |
| Palavras-Chave | #EFFICIENCY |
| Tipo |
期刊论文 |
