INVESTIGATING THE MULTIPARTICLE DECAY IN INTERMEDIATE-ENERGY HEAVY-ION COLLISIONS

Exclusive measurements of light charged products (LCP) in the Xe-132 Au-197 collisions at 44 MeV/nucleon have been performed using MEDEA 4 pi detection system. The admixture of each particle type into the LCP multiplicity is found to be almost independent of the impact parameter . The data are analyzed with a formalism where the fluctuations of the multiparticle decay are described by uncorrelated Poissonian statisti cal distributions. The impact parameter filtering is performed using t he LCP multiplicity. Self-correlation and impact parameter averaging e ffects are identified. The dominance of the statistical contribution i n the fluctuations of the LCP multiplicity is deduced.