Experimental x-ray-production cross sections for the M3, M4 and M5 subshells of Pt and Au by electron impact

CARRERAS, ALEJO; CASTELLANO, GUSTAVO; SEGUI, SILVINA; TRINCAVELLI, JORGE

Physical Review A

American Physical Society

Año: 2020 vol. 102

2469-9926

X-ray production cross sections for M$_3$, M$_4$ and M$_5$ subshells of Pt and Au by electron impact were experimentally determined at incident energies ranging between 2.8 and 28 keV. To this purpose, Pt and Au thick targets were irradiated by an electron beam in a field emission gun scanning electron microscope, and the x-ray emission spectra were recorded with an energy dispersive spectrometer. The x-ray production cross sections were obtained as a result of the spectral processing performed through a careful parameter optimization routine previously developed, which involves an analytical function for the prediction of the experimental spectra, on the basis of ionization depth distribution functions. The results are compared with the scarce data available in the literature.