Multi-Nucleon Exchange in Stochastic Mean-Field Approach

by SAKIR AYIK (Tennessee Technological University - US)

Friday 28 Jun 2024, 11:00 → 12:00 Europe/Rome

Aula Azzurra (INFN - LNS)

I will present a brief description of Stochastic Mean-Field Approach for describing heavy-ion dynamics at low energies [1]. The approach gives rise to a quantal diffusion mechanism for multi-nucleon exchange in the di-nuclear regime of heavy-ion collisions near barrier energies. Approach is fully microscopic, takes into account full geometry of collision dynamiics, quantal effects dueto shell structure, and does not require any adjustable parameters other than the standard energy density functional of Skyrme force. Some examples of calculations of the primary and secondary fragment mass and charge distributions are presented in collisions of 48 Ca+238U and 138Xe+208Pb systems [2-3]. By employing SMF approach, it is possible to describe energy dissipation and fluctuations, some aspects of spontaneous fission of heavy nuclei and spinodal instabilities in nuclear matter.
REFERENCES
1. Stochastic mean-field approach for nuclear dynamics, S. Ayik, Phys. Lett. B 658 (2008) 174.
2. Quantal diffusion description of multi-nucleon transfer in Heavy-Ion collisions, S. Ayik, M. Arik, E.C. Karanfil, B. Yilmaz, O. Yilmaz and A. S. Umar, Phys. Rev. C 104 (2021) 054614.
3. Multinucleon transfer mechanism in Cf+Th collisions using quantal transport description based on Stachastic Mean-Field Approach, S. Ayik, M. Arik, O. Yilmaz, B. Yilmaz, and A. S. Umar, Phys. Rev. C 107 (2023) 014609.