Accession Number : AD0815674

Title :   THE ERROR PROBABILITY OF A PHOTOMULTIPLIER AS A THRESHOLD DETECTOR OF LOW LEVEL LIGHT PULSES,

Corporate Author : NORWEGIAN DEFENCE RESEARCH ESTABLISHMENT KJELLER

Personal Author(s) : Solesvik, A. ; Wang, G. ; Lund, T.

Report Date : 19 SEP 1966

Pagination or Media Count : 15

Abstract : In the application of photomultiplier tubes as threshold detectors for low level light pulses, the statistical nature of the photo-emission and secondary emission processes give rise to a failure probability, defined here as the probability that, either: the noise exceeds a given threshold level, or: the signal amplitude is below the threshold level. In the following these are referred to as P sub f, the false alarm probability, and P sub d, the non-detection probability, respectively. This report describes the calculation of P sub f and P sub d and gives numerical values in curves for a photomultiplier with an S20 cathode and a gain of one million as a typical example. The calculations are based upon certain approximations, and Poisson statistics are assumed to be valid for the photoemission, the secondary emission and for the emission of noise electrons from the cathode (from background illumination and dark current).

Descriptors :   (*PHOTOMULTIPLIER TUBES, LIGHT PULSES), NUMERICAL ANALYSIS, PHOTOCATHODES, NORWAY, PHOTOELECTRIC EFFECT, SECONDARY EMISSION, FAILURE(ELECTRONICS), PROBABILITY, NOISE(RADIO), RESPONSE, STATISTICAL PROCESSES, PHOTOELECTRONS, DISTRIBUTION FUNCTIONS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE