Effect of Pulse Rise Time on the Response of Corona Detectors

The response of RCL corona-pulse detectors is investigated as a function of the calibration-pulse rise time. Excitationpulse rise times ranging from 0.05-50 ¿s are employed and the resulting signal response waveform and magnitude are recorded. The peak response is found to diminish appreciably with the rise time for values in excess of 1.0 ¿s; significant response waveform changes are manifest with rise times greater than 3.0 ¿s. A multichannel pulse-height analyzer is utilized to demonstrate the errors inherent in response signal magnitude distribution measurements when calibration is carried out with square pulses having different rise and decay times.