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The study of participant–spectator matter and thermalization for charge asymmetric nuclear collision

Using the isospin-dependent quantum molecular dynamics model, we study the N/Z dependence of participant–spectator matter, anisotropic ratio 〈Ra〉 and relative momentum 〈KR〉, at different incident energies (E = 100, 200 and 300 MeV per nucleon) and at scaled impact parameters (–0.4). We have also investigated the effect of isospin-dependent cross-section on these quantities as a function of N/Z of the system. Simulations are carried out for the reactions of 124Pr59 + 124Pr59 (N/Z = 1.101), 124Ba56 + 124Ba56 (N/Z = 1.214), 124I53 + 124I53 (N/Z = 1.33), 124Sn50 + 124Sn50 (N/Z = 1.48) and 124Ag47 + 124Ag47 (N/Z = 1.638). Our results show that the participant matter and anisotropic ratio decrease and the spectator matter and relative momentum increase with an increase in N/Z of the system.