Probing quantum many-body dynamics in nuclear systems

Abstract

Abstract. Quantum many-body nuclear dynamics is treated at the mean-field level with the time-dependent Hartree-Fock (TDHF) theory. Low-lying and high-lying nuclear vibrations are studied using the linear response theory. The fusion mechanism is also described for light and heavy systems. The latter exhibit fusion hindrance due to quasi-fission. Typical characteristics of quasi-fission, such as contact time and partial symmetrisation of the fragments mass in the exit channel, are reproduced by TDHF calculations. The (multi-)nucleon transfer at sub-barrier energies is also discussed.

Time-dependent Hartree-Fock calculations for multi-nucleon transfer processes: Effects of particle evaporation on production cross sections

“…Exchanges of a number of nucleons caused by the neck formation can induce an energy dissipation, a transfer of energy from translational relative motion to that of internal excitations. This provides an opportunity to study correlation effects in nuclear dynamics [2]. MNT reactions have also been expected to be a new means to produce unstable nuclei whose production is difficult by other methods [4][5][6].…”

Comparing Experimental and Theoretical Quasifission Mass Angle Distributions

“…Such results provide a good testing ground for theories and models that can predict the mass and angle of fission fragments. The TimeDependent Hartree-Fock theory, which provides a selfconsistent mean-field description of the dynamics of quantum many-body systems, shows promise in describing the quasifission process and in particular these quantities [14][15][16][17][18][19][20][21]. In this work we studied the 40 Ca + 238 U reaction experimentally using the MAD technique and also using the TDHF3D code [4] to model the quasifission process.…”