Multi-Fragmentation in Heavy-Ion Collisions: Role of System-Size Effects, Cross-Section and Equation of State

Abstract

Within the quantum molecular dynamics model, we study the role of different equations of state and their momentum dependence as well as different nucleon-nucleon cross-sections in multi-fragmentation. We find that the significance of momentum dependent interactions depends on the asymmetry of the reaction. The role of larger cross-section reduces to marginal if momentum dependence is included in the interaction. We also present the system-size effects in multi-fragmentation and shall show that the multiplicity of any kind of fragment exhibits a power law behaviour.