Electronic Collimation in Proportional Counter by Rise Time Discrimination

Abstract

A method of electronic collimation in the proportional counter was developed and its performance examined. The method utilizes the difference in the rise time of output pulses. The rise time is converted into pulse height using a rise-time-to-pulse-height converter, followed by a single channel pulse height analyzer. Choosing the pulses of the fastest rise time one can selectively register the energies of the particles parallel to the center wire (anode). The method is applicable to gas recoil fast neutron spectrometers.