Analysis of the shell effect of fission fragments in the quasi-fission process

The process in superheavy element synthesis in which two nuclei collide and fission before forming a compound nucleus is called quasi-fission. The dynamical model used in our calculations is highly reproducible in calculating the total kinetic energy (TKE) of actinide fission. However, there is a problem in the reproducibility of TKE of quasi-fission in the current calculations using the dynamical model. Our calculations show that the TKE of mass asymmetry is lower than the experimental data. The reason for this is that the shell effect of fission fragments is not considered. In this study, we attempted to reproduce mass-asymmetric quasi-fission with shell effects by using a dynamical model. The objective is to analyze the calculation results and follow the time evolution of the shape of the nucleus to deepen our understanding of the dynamics of quasi-fission.