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Background: Multinucleon transfer (MNT) and quasifission (QF) processes aredominant processes in low-energy collisions of two heavy nuclei. They areexpected to be useful to produce neutron-rich unstable nuclei. Nuclear dynamicsleading to these processes depends sensitively on nuclear properties such asdeformation and shell structure. Purpose: We elucidate reaction mechanisms ofMNT and QF processes involving heavy deformed nuclei, making detailedcomparisons between microscopic time-dependent Hartree-Fock (TDHF) calculationsand measurements for the $^{64}$Ni+$^{238}$U reaction. Methods:Three-dimensional Skyrme-TDHF calculations are performed. Particle-numberprojection method is used to evaluate MNT cross sections from the TDHF wavefunction after collision. Results: Fragment masses, total kinetic energy (TKE),scattering angle, contact time, and MNT cross sections are investigated for the$^{64}$Ni+$^{238}$U reaction. They show reasonable agreements withmeasurements. At small impact parameters, collision dynamics dependssensitively on the orientation of deformed $^{238}$U. In tip (side) collisions,we find a larger (smaller) TKE and a shorter (longer) contact time. In tipcollisions, we find a strong influence of quantum shells around $^{208}$Pb.Conclusions: It is confirmed that the TDHF calculations reasonably describeboth MNT and QF processes in the $^{64}$Ni+$^{238}$U reaction. Analyses of thissystem indicates the significance of the nuclear structure effects such asdeformation and quantum shells in nuclear reaction dynamics at low energies.

Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in the $^{64}$Ni+$^{238}$U reaction