Dead Time Correction for a Position Sensitive Detecto

Abstract

The dead time of some position sensitive detectors is determined by the arrangement in time of the totality of incoming events, irrespective of the position channel to which each event may be assigned. If the arrangement of events in position is statistically independent of their arrangement in time, the ratios of the means for the different position channels are unaffected by dead time and all channels need correction by the same factor, determined solely by the combined rate for all channels. Expressions for the variance of the individual counts in each channel are given for Type I counters. A symmetric uncertainty in the allocation of each event to its proper channel is considered and has no effect in a first approximation.