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 ›› 2016, Vol. 27 ›› Issue (6): 137 doi: 10.1007/s41365-016-0131-5

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Beam charge integration in external beam PIXE–PIGE analysis utilizing proton backscattering with an extraction window

Ya Xu 1,2  Mi Xu Guang-Fu Wang 1,3  Chen-Long Zheng Meng-Lin Qiu 1  Ying-Jie Chu 1   

  1. 1 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
    2 China Nuclear Power Engineering Co. Ltd., Beijing 100840, China
    3 Beijing Radiation Center, Beijing 100875, China
  • Contact: Guang-Fu Wang E-mail:guangfu_w@bnu.edu.cn
  • Supported by:

    This work was supported by the Beijing Natural Science Funds (No. 1142006).

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Ya Xu, Mi Xu, Guang-Fu Wang, Chen-Long Zheng, Meng-Lin Qiu, Ying-Jie Chu. Beam charge integration in external beam PIXE–PIGE analysis utilizing proton backscattering with an extraction window.Nuclear Science and Techniques, 2016, 27(6): 137     doi: 10.1007/s41365-016-0131-5
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Abstract:

In this study, we present a new method for the indirect integration of beam charges in external beam proton-induced X-ray emission and proton-induced γ-ray emission (PIXE–PIGE) analysis. We recorded proton spectra backscattered by a Kapton film extraction window in different sample situations and under different beam currents. We also simulated backscattering spectra using the simulation of backscattering spectra program (SIMNRA). We determined that in a specific geometrical arrangement, different sample situations did not significantly affect factor CQ (the ratio between integral backscattering proton counts and integral beam charges). We also studied the reproducibility and beam current dependence of factor CQ. The statistic factor of CQ was 28.95 ± 0.6 kilo counts/μC, with a relative standard deviation of 2.0 %. Significantly, in external beam PIXE–PIGE analysis, we were able to calculate beam charge integration from the integral backscattering proton counts in an energy region.

Key words: Beam charge integration, External beam, PIXE–PIGE, Proton backscattering