Features of multiple particle production in nuclear photoemulsions

Characteristics with respect to secondary particle multiplicity, produced by negative pions in nuclear photoemulsions within the energy range E=20-200 GeV have been analyzed. It is shown, that with the primary hadron energy growth increased is the probability of appearance of quasinucleon events with an odd number of rays, which does not result completely from particle production on nuclei. The ratio of the quantity of events with odd number of shower particles and the quantity of events with an even number of shower particles is close to an unit independent of target nucleus sizes. Increasing the quantity of events with Nsub(h)<=1 (mainly with Nsub(h)=0) with the primary hadron energy growth results from the reduction of quantity of events with Nsub(h)>=2, where Nsub(h) is a low-energy particle number. Redistribution of event number in the low Nsub(h) range with the primary hadron energy growth was explained on the basis of the assumption on decreasing the interaction efficiency of leading particles inside a nucleus, which results in increasing the probability of incident hadron collision only with one intranuclear nucleon