A Geiger Counter Spectrometer for X-Ray Fluorescence Analysis

Abstract

A Geiger counter spectrometer was constructed for analysis of x‐ray fluorescence spectra. The instrument is capable of measuring the K series lines of the elements beginning at about atomic number 22, up to about atomic number 50. In the middle portion of this range, spectro‐chemical analyses can be performed rapidly with a sensitivity of 1 part in 10,000. Although the intensities are considerably reduced, analyses may still be carried out, using the L series spectra of the elements above atomic number 55.