T. Czyzewski et al., M-SHELL X-RAY-PRODUCTION BY C, N AND O IONS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 109, 1996, pp. 52-58
M-shell X-ray production cross sections for Os, Au and Th targets were
measured for C, N and O ions at incident energies from 1.2 MeV to abo
ut 36 MeV. Experimental M-shell ionization cross sections, derived by
using the effective M-shell fluorescence yields, are compared with the
prediction of the SCA calculations with relativistic hydrogenic wave
functions. The calculations were performed both in the separated-atom
(SA) and united-atom (UA) limits to simulate the binding effect. Gener
ally, the data show better agreement with the SCA-UA cross sections fo
r lower energies and with the SCA-SA predictions for higher energies.
For C and O impact on the Au target at about 2 MeV/amu the present dat
a are compared with available experimental results and theoretical pre
dictions of the ECPSSR theory.