HIGH-RESOLUTION ION-INDUCED X-RAY SPECTROSCOPY FOR CHEMICAL-STATE ANALYSIS

Satellite lines of K X-ray lines from K and Cr, and L lines from In are observed for impact by 1.4 MeV/u H-1+, He-4(2+), C-12(4+), O-16(4+) and Cl-35(8+). A curved crystal spectrometer was used with a position sensitive proportional counter with improved linearity of the backgammon readout. The distribution of Cr K(alpha) satellite lines depends on the chemical state of Cr, being peaked at lower energy for the toxic valency 6 compounds than for valency 3 and metallically bound Cr. Fluorescence excitation of the Cr diagram line is observed for a stainless steel sample from enhancement by Fe X-rays.