Analysis of the probability distribution of photocount number of the   onemode stochastic radiation
  The Mandel probability distribution of one-mode stochastic radiation photocounts is analized. Approximations of n-photon registration probabilities with guaranteed accuracy are obtained in the case when the registration time is sufficiently small. 
Yu. P. Virchenko (1), N. N. Vitokhina (1) ((1) Belgorod State   University, Russia)