Possible Experimental Evidence of a Moderate Proton Halo in 29 S
LIU Zu-Hua1 , RUAN Ming1 , ZHAO Yao-Lin1 , ZHANG Huan-Qiao1 , YANG Feng1 , MA Zhong-Yu1 , LIN Cheng-Jian1 , CHEN Bao-Qiu1 , WU Yue-Wei1 , ZHAN Wen-Long2 , GUO Zhong-Yan2 , XIAO Guo-Qing2 , XU Hu-Shan2 , SUN Zhi-Yu2 , LI Jia-Xing2 , CHEN Zhi-Qiang2
1 China Institute of Atomic Energy, Beijing 102413
2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
Possible Experimental Evidence of a Moderate Proton Halo in 29 S
LIU Zu-Hua1 ;RUAN Ming1 ;ZHAO Yao-Lin1 ;ZHANG Huan-Qiao1 ;YANG Feng1 ;MA Zhong-Yu1 ;LIN Cheng-Jian1 ;CHEN Bao-Qiu1 ; WU Yue-Wei1 ;ZHAN Wen-Long2 ;GUO Zhong-Yan2 ;XIAO Guo-Qing2 ;XU Hu-Shan2 ;SUN Zhi-Yu2 ;LI Jia-Xing2 ;CHEN Zhi-Qiang2
1 China Institute of Atomic Energy, Beijing 102413
2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
关键词 ：
21.10.Ft ,
25.60.-t ,
25.60.Dz ,
27.30.+t
Abstract ： The total reaction cross sections (TRCSs) of 29 S+28 Si have been measured at intermediate energies. An obvious enhancement in TRCS of 29 S is observed as compared with its neighbouring nuclei. The TRCSs of 29 S+28 Si are calculated with the modified Glauber theory in the optical limit and few-body approaches. The different factor d as a possible measure of halo appearance is deduced from the experimental and theoretical data. It is well accepted that 27 P is a proton halo nucleus. Although not as anomalous as 27 P, the different factor d of 29 S is obviously larger than that of its neighbouring isotones of N=13. This result indicates that a moderate proton halo may exist in 29 S nucleus. We calculate the total reaction cross sections for 29 S with the modified Glauber theory as a function of incident energy and compare the results with those for 27 Si which is a core nucleus of 29 S. The measured TRCSs of 27 Si+28 Si can be described to be satisfactory by the modified Glauber theory of the optical limit approach. Although a diffused nuclear density distribution is used, the theories still inadequately predict the experimental TRCSs of 29 S+28 Si, which further indicates the possibility of proton halo in29 S.
Key words ：
21.10.Ft
25.60.-t
25.60.Dz
27.30.+t
出版日期: 2004-09-01
引用本文:
LIU Zu-Hua;RUAN Ming;ZHAO Yao-Lin;ZHANG Huan-Qiao;YANG Feng;MA Zhong-Yu;LIN Cheng-Jian;CHEN Bao-Qiu; WU Yue-Wei;ZHAN Wen-Long;GUO Zhong-Yan;XIAO Guo-Qing;XU Hu-Shan;SUN Zhi-Yu;LI Jia-Xing;CHEN Zhi-Qiang. Possible Experimental Evidence of a Moderate Proton Halo in 29 S[J]. 中国物理快报, 2004, 21(9): 1711-1713.
29 S. Chin. Phys. Lett., 2004, 21(9): 1711-1713.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I9/1711
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2004, Vol. 21 
