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 (5): 050501 doi: 10.13538/j.1001-8042/nst.25.050501

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

A method of estimating and subtracting the hydrogen background in the natural carbon target used in the 12C + 12C experiment

QU Wei-Wei,1, 2 ZHANG Gao-Long,1, 2  Satoru Terashima,1, 2 Isao Tanihata,1, 2, 3 GUO Chen-Lei, 1, 2  LE Xiao-Yun 1, 2   

  1. 1School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
    2International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191, China
    3Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan
  • Contact: ZHANG Gao-Long E-mail:zgl@buaa.edu.cn
  • Supported by:

    Supported by the Innovation Foundation of BUAA for PhD Graduates and National Natural Science Foundation of China (Nos. 11035007, 11235002 and 11175011)

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QU Wei-Wei, ZHANG Gao-Long, Satoru Terashima, Isao Tanihata, GUO Chen-Lei, LE Xiao-Yun . A method of estimating and subtracting the hydrogen background in the natural carbon target used in the 12C + 12C experiment.Nuclear Science and Techniques, 2014, 25(5): 050501     doi: 10.13538/j.1001-8042/nst.25.050501

Abstract:

The experimental data of 100A MeV 12C + 12C elastic scattering are checked by using two-body kinematic calculation and 12C + p elastic scattering. It is shown that the measured data are true and reliable. In the paper, the transformation between the excited energy spectra of the 12C + 12C system and the ground state energy spectra of the 12C + p system is introduced. The method of subtraction of the hydrogen background in the natural carbon target used in the experiment is elaborately described and the results are discussed. It is indicated that this method of subtraction of hydrogen background is reasonable and can be used in the data analysis. Based on the elastic scattering cross section of the previous experiment of 12C+p at 95.3A MeV, the hydrogen content entered into the reaction is analyzed. The final hydrogen content in the natural carbon target is (2.73±0.12)%.

Key words: Elastic scattering, Subtraction background, Hydrogen content