Simulação de reações núcleo-núcleo entre 30 e 1000 A MeV com o código CRISP

Abstract

Within this work, a Nuclei-Nuclei reaction model was developed and implemented in CRISP code. The nuclei are considered spheric with energy level following a Fermi gas model. The incident nuclei trajectory is determined using classical mechanics considering Coulomb scattering. The individual nucleons of the projectile nuclei are followed during the approximation trajectory; once they reach the target nuclei surface two processes are allowed: a reflexion in the target nuclear surface or they can pass through it and interact with one of the nucleons of the target, in which case the intranuclear cascade phase is initiated. Using CRISP code was studied the importance of peripherical coalition between both nuclei (target and beam). Total reaction cross section, the double differential cross section from proton and neutron emission, spallation reaction fragments cross section, fission residual mass cross section was studied for differents cases; showing better results for systems with less rest mass and less excitation energy.