X-ray emission spectroscopy alpha-particle X-ray spectroscopy alpha-particle X-ray fluorescence spectrometry CHMO:0000308 alpha-particle X-ray emission spectroscopy alpha X-ray spectrometry alpha X-ray spectroscopy alpha-particle X-ray spectrometry alpha-particle X-ray fluorescence spectroscopy alpha-X-ray spectrometry alpha-particle X-ray emission spectrometry alpha-X-ray emission spectroscopy X-ray emission spectroscopy where the sample is irradiated with alpha-particles and the energies of the backscattered alpha-particles and X-rays emitted due to core-to-core transitions are measured. alpha-X-ray spectroscopy alpha-X-ray fluorescence spectroscopy APXS alpha-X-ray fluorescence spectrometry alpha-X-ray emission spectrometry