The effect of driving force on the division of excitation energy between the asymmetric colliding partners in deep inelastic heavy-ion collisions is studied in the nucleon-exchange model. For this purpose an event-by-event analysis using Monte Carlo simulation technique is performed. It is seen that the fraction of the total excitation energy carried by the projectile-like fragment is sensitive to the mass drift. The model is also applied to analyze the correlation between fragment mass and excitation energy for a given total energy loss and significant correlation is found. The reactions induced by ${}_{}{}^{56}{}_{}{}^{}\mathrm{Fe}$ at 9 MeV/nucleon and ${}_{}{}^{74}{}_{}{}^{}\mathrm{Ge}$ at 8.5 MeV/nucleon on ${}_{}{}^{165}{}_{}{}^{}\mathrm{Ho}$ are considered in our analysis and the calculated correlations are in good agreement with the results obtained from the kinematic coincidence experiments.

• Received 1 June 1990

DOI:https://doi.org/10.1103/PhysRevC.42.R2283