Approximation to the probability density at the output of a photmultiplier tube
Abstract
The probability density of the integrated output of a photomultiplier tube (PMT) is approximated by the Gaussian, Rayleigh, and Gamma probability densities. The accuracy of the approximations depends on the signal energy alpha: the Gamma distribution is accurate for all alpha, the Raleigh distribution is accurate for small alpha (approximate or less than 1 photon) and the Gaussian distribution is accurate for large alpha (approximate or greater than 10 photons).
 Publication:

The Telecommunications and Data Acquisition Report
 Pub Date:
 May 1983
 Bibcode:
 1983tdar.nasa...36S
 Keywords:

 Computer Programs;
 Error Detection Codes;
 Markov Processes;
 Optical Communication;
 Photomultiplier Tubes;
 Probability Density Functions;
 Bessel Functions;
 Least Squares Method;
 Poisson Density Functions;
 Random Noise;
 Rayleigh Distribution;
 Electronics and Electrical Engineering