Factors Affecting the Application of Halogen-Quenched G-M Tubes

Pulses obtained from halogen-quenched G-M tubes operated under minimum circuit loading conditions were investigated. Oscillograms are shown and pulse characteristics discussed. The data show that the plateau obtained is determined, in part, both by the pulse shapes and by the electrical characteristics of the associated equipment. Spurious peaks in the halogen-quenched pulses occurring at normal operating voltages may be registered as counts, at certain voltage discrimination levels and circuit resolving times. This is of practical importance in radiation measurements.