Angular dependence of L X-rays emission for Ag by 10 keV electron-impact

Abstract

Abstract The characteristic X-ray intensities of Ag-L α , L β1 , L β2 and L γ 1 are measured in electron-impact ionization at energy of 10 keV. The emission angle in this work ranges from 0° to 20° at interval of 5°. The angular dependence of L X-ray intensity ratios has been investigated for L α / L β1 , L β2 / L β1 and L γ1 / L β1 . It is found from the experimental results that the emissions of L β1 , L β2 and L γ 1 X-rays are spatially isotropic, while the L α X-rays exhibit anisotropic emission. Consequently, the alignment behavior of vacancy states is discussed with thorough analysis of vacancy transfer process.