PULSE PROCESSING SYSTEM

A pulse counting system with improved energy resolution is disclosed having dual channels for pulse processing at different rates and a pulse pileup detector to select which channel is utilized. Pulse input is delayed until the pileup detector can determine if any pulse is so closely followed in time by a second pulse to constitute pulse pileup. If no pulse pileup is detected, the slower channel is selected. The slow channel clips the pulse to a relatively wide pulse width to retain good energy resolution. If pulse pileup is predicted, the fast channel with correspondingly shorter pulse width is selected to improve resolution in respect to time. The output of the two channels are transmitted to a pulse height analyzer for interpretation.