Abstract
Autoionization electron emission spectra coexisting with the M 2,3 -VV Auger line by X-ray excitation are discussed theoretically. The present study is motivated by an experiment of Brener et al. (Phys. Rev. B 37 (1987) 1387) on metallic Ti, V and Cr by the use of X-rays of Ti K α(4.511 keV) and Al K α(1.487 keV), where autoionization electron emission spectra coexisting with the M 2,3 -VV line are possible only when the X-rays are Ti K α. By a model in which autoionization electron emission spectra are generated by the scattering of X-rays, while M 2,3 -VV spectra are generated by a resonant electron emission following the X-ray absorption, the increase of autoionization emission relative to M 2,3 -VV spectra with increasing energies of the incident X-rays is obtained for metallic Ti, in agreement qualitatively with the corresponding experimental result of Brener et al .
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