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The hadronic and string cascade model and the corresponding event generator LUCIAE are used to study systematically the production of the grey particles in (14.6, 60 and 200 A GeV)O+Em, (200A GeV)Si+Em, (200 A GeV) S+Em and (11.6A GeV)Au+Em reactions. The dependences of the mean multiplicity, the multiplicity distributions and the polar angular distributions of the grey particles on the incident energy, the projectile mass and the collision centrality observed in emulsion experiments, respectively, are all reproduced by LUCIAE calculations. In addition the effects of the rescattering on the grey particle production are also investigated.
The hadronic and string cascade model and the corresponding event generator LUCIAE are used to study systematically the production of the gray particles in (14.6, 60 and 200 A GeV) O + Em, (200A GeV) Si + Em, (200 A GeV) S + Em and (11.6A GeV) Au + Em reactions. The dependences of the mean multiplicity, the multiplicity distributions and the polar angular distributions of the gray particles on the incident energy, the projectile mass and the collision centrality observed in emulsion experiments, respectively, are all reproduced by LUCIAE calculations. In addition the effects of the rescattering on the gray particle production are also investigated.