Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (2): 020501 doi: 10.13538/j.1001-8042/nst.25.020501

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

A method for determination of the s orbital component of Be-12 ground state

CAI Xiao-Lu, FAN Guang-Wei, XU Hang-Hua , AN Zhen-Dong, FAN Gong-Tao, XU Ben-Ji, LI Yong-Jiang, PAN Qiang-Yan, YAN Zhe, XU Wang   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
    3 School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China.
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CAI Xiao-Lu, FAN Guang-Wei, XU Hang-Hua, AN Zhen-Dong, FAN Gong-Tao, XU Ben-Ji, LI Yong-Jiang, PAN Qiang-Yan, YAN Zhe, XU Wang. A method for determination of the s orbital component of Be-12 ground state.Nuclear Science and Techniques, 2014, 25(2): 020501     doi: 10.13538/j.1001-8042/nst.25.020501

Abstract:

The ambiguity of the structure of 12Be especially in the configuration of 12Be ground state has attracted a lot of attention recently. We notice that the nuclear reaction cross section σR at low energy region is sensitive to the surface structure of 12Be, which is greatly impacted by the ground state configuration of 12Be especially by the s orbital component. By using existed interaction cross section data of 12Be on C at 790 MeV/nucleon and Glauber model, the upper limit of the s orbital occupation probability of 12Be ground state is determined to be about 56% with Single Particle Model (SPM) calculations. This demonstrates that the method is very promising to determine the s orbital component of 12Be with proper nuclear-matter density distribution calculations for different orbital of 12Be ground state. Hence we bring forward to determine the s orbital component of 12Be by measuring the σR of 12Be on C and Al at several tens of MeV/nucleon. In this paper, the feasibility and detailed experimental scheme of the σR measurement are carefully studied. The precision of the s orbital occupation probability of 12Be ground state is expected to achieve 9% by using the proposed 2% σR data.

Key words: 12Be, Reaction cross section, Nuclear-matter density distribution, Ground state configuration