Energy dispersive X-ray fluorescence analyzer PORTABLE

摘要

The apparatus relates to means for spectral analysis and X-ray studies designed to advantageously heavy chemical elements in laboratory and field conditions. The apparatus includes an outer housing with cover plate and the exit window, form a closed chamber defined within the housing ray source unit replaceable filters primary X-rays, the collimator of the primary x-ray energy dispersive detector, analog-to-digital converter energy dispersive detector signals in the fluorescence spectrum of the sample, the processing unit fluorescence spectrum, as well as software-based control unit and an external helium supply system into the housing. Used X-ray optical circuit type inversion probe "X-ray source - the fluorescence detector", the optical axis of the X-ray source, collimator and energy dispersive detector located in one plane, wherein the X-ray source with collimator mounted secured to the optical axis orthogonal to the exit window plane, and energy dispersive detector is mounted with the optical axis inclination providing for the exit window plane, preferably in the range of angles 30 ° -45 ° and visibility of the irradiated region of the sample. Technical result is a weak fluorescence of the sample flow change when changing the selection of the radiation angle in said angle range, elimination of the effect of an air layer on the measurement results. The problem of optimization of the conditions of excitation and fluorescence detection, increase the accuracy of measurements of light chemical elements in the sample, regardless of the structure and shape of the sample.; 1 bp 5 and ZP 4-f ly Fig.