MULTIPLICITY DISTRIBUTIONS OF SECONDARY CHARGED-PARTICLES FROM INTERACTIONS OF HE-FRAGMENTS WITH EMULSION AT 60 A GEV C/

From the projectile fragments, emerged from noncentral collisions of 6 0 AGeV/c O-16 collisions in nuclear emulsion, He nuclei were singled o ut and followed for their interactions. Multiplicity characteristics o f secondary charged particles from 434 inelastic He-emulsion interacti ons at 60 AGeV/c were compared with the correspending ones from the sa me interactions at 2.1 and 4.5 AGeV/c. The multiplicity distribution o f shower particles compared with Fermi model predictions, have shown t hat He-emulsion interaction at 60 AGeV/c can be considered as superpos ition of nucleon-nucleus and collective He-nucleus collisions. The mul tiplicity characteristics of grey and black particles are energy indep endent.