A major challenge in understanding the process of nucleus-nucleus interactions is the examination of the processes that occur in the participant and spectator areas of interacting nuclei, considering the central nature of the reactions. Nearly thresholdless detection of the secondary charged particles is made possible by nuclear emulsion detectors (NED), which provide a complete 4 \(\pi\) angular coverage. This work is mainly concerned with the multiplicity distributions (MD) and fluctuation of the average multiplicities of secondary charged particles (slow proton, fast proton, and shower) brought about by the collision of \(^{84}Kr\) -nuclei with emulsion nuclei at 1 A GeV. The MD of these particles has been computed by use of a modified cascade evaporation model (MCEM). The MD of each of the several charged secondary particles is correlated and analyzed. The observation demonstrates that the theoretical calculation results for the average multiplicities of shower particles, fast and slow protons agree well with the experimental data. Correlations seen experimentally between the multiplicities of different emitted particles are faithfully reproduced by the MCEM. There is good agreement between the experimental data and the theoretical calculation results.
