Fig. 1. Experimental setup.

Fig. 2. Characteristic K X-ray spectrum of Fe and V induced by impact with bremsstrahlung with central energy of 13.1 keV and measured at the emission angle of 150°: (a) Target Fe; (b) target V.

Fig. 3. Angular distribution of characteristic X-ray intensity ratios of K_β/K_α at detection angles of 120°–170° for Fe and V.

Fig. 4. Comparison of X-ray intensity ratios K_β/K_α in the present work, literature experimental results from Ertuğrul^[24] and theoretical values^[25–27].