• Formulae for the secondary electron yield and total stopping power from 0.8 keV to 10 keV for metals

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    • Keywords

       

      Secondary electron yield; total stopping power; metal.

    • Abstract

       

      Based on the range–energy relationship, the characteristics of secondary electron emission, some relationship between the secondary electron yield $\delta$ and experimental results, the universal formulae for $\delta_{0.8−2}$ (the subscript indicates that the energy range of primary energy atthe surface W$_{\rm po}$ is from 0.8 keV to 2 keV) and $\delta_{2−10}$ for metals were deduced. The $\delta_{0.8−10}$ calculated with the universal formulae and the$\delta_{0.8−10}$ measured experimentally were compared, and the scattering of $\delta$ for the same metal was analysed. Finally, we concluded that the formulae were universal for $\delta_{0.8−10}$ for metals. On the basis of some relationship between parameters of $\delta$, wededuce a formula for expressing total stopping power $S_{0.8−10}$ as a function of $S_{10−30}, \delta_{0.8−10}, \delta_{10−30}$, backscattered coefficient $\heta_{0.8−10}, \heta_{10−30}$ and W$_{\rm po}. The calculated $S_{0.8−10}$ were compared with the values measured experimentally and it was concluded that the formula to estimate $S_{0.8−10}$ was universal for metals.

    • Author Affiliations

       

      XIE A G1 2 XIAO S Y1 WANG L1

      1. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210 044, China
      2. Department of Electrical and Biological Physics, Kwangwoon University, 20 Kwangwoon-gil, Nowon-gu, Seoul 139-701, Republic of Korea
    • Dates

       
  • Pramana – Journal of Physics | News

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