Effects of shell structure and N/Z ratio of a projectile on the excitation energy distribution between interacting nuclei in deep-inelastic collisions.

Abstract

Deep inelastic collisions of stable and radioactive projectiles with heavy targets are considered. The effects of shell structure and the N/Z ratio of a projectile on the excitation energy distribution between interacting nuclei, and on the centroid position and variance of the charge (mass) distribution of binary reaction products are explored. The role of nucleon exchange and particle-hole excitation mechanisms in the transformation of relative motion kinetic energy into the internal excitation energy of nuclei is studied. It is shown that a change in the mass number of the projectile nucleus causes a sufficient change both in the sharing of the excitation energy between fragments and in the charge (mass) distribution of reaction products. The nucleon exchange process between interacting nuclei is the main mechanism of dissipation.