DoubleK-shell ionization of Al induced by photon and electron impact

K. Fennane, J.-Cl. Dousse, J. Hoszowska, M. Berset, W. Cao, Y.-P. Maillard, J. Szlachetko, M. Szlachetko, M. Kavčič
2009 Physical Review A. Atomic, Molecular, and Optical Physics  
This paper reports on the investigation of the double K-shell ionization of metallic aluminum induced by photon and electron impact. The experimental method consisted to measure the K␣ hypersatellite spectra resulting from the radiative decay of double 1s vacancy states by means of high-resolution x-ray spectroscopy using a Bragg-type von Hamos crystal spectrometer. Measurements of the photon-induced spectra were carried out at the European Synchrotron Radiation Facility, Grenoble, France,
more » ... noble, France, while those of the electron-induced spectra were performed at the University of Fribourg. The double 1s ionization probabilities and cross sections were derived from the K␣ 2 hypersatellite to diagram line intensity ratios for photon beam energies ranging between 3.1 and 5.5 keV and for different incident electron-beam energies ranging between 4 and 20 keV. The energy and linewidth of the K␣ 2 hypersatellite x-ray line were also determined for which consistent results were obtained from the photon and electron-beam measurements.
doi:10.1103/physreva.79.032708 fatcat:kgajvfnhxrc5no3o3nru5lxkq4