Angular distribution of L X-ray emission from tungsten following photoionization

The angular distribution of L X-rays of W target induced by 0–20 keV bremsstrahlung has been measured at different angles varying from 100° to 260° at intervals of 10°. The measured relative intensities of L_α and L_β2 X-rays are found to be anisotropic with thorough analysis. It is worth mentioning that the L_β1 and L_β2 lines are distinguished in L_β line, so that the angular dependence of L_β2 line is clarified comparing with previous investigations (Demir et al., 2003; Özdemir et al., 2011). - Highlights: • The angular distribution of X-ray emission is studied by 0–20 keV bremsstrahlung. • The absolute intensities of W-L_β1 and L_β2 lines are distinguished from L_β lines. • The angular dependence of W-L_β2 line is clarifying comparing with previous investigations