Quantum microscopic approach to low-energy heavy ion collisions

Abstract

The Time-dependent Hartree-Fock (TDHF) theory is applied to the study of heavy ion collisions at energies around the Coulomb barrier. The competition between fusion and nucleon transfer mechanisms is investigated. For intermediate mass systems such as 16O+208Pb, proton transfer favors fusion by reducing the Coulomb repulsion. A comparison with sub-barrier transfer experimental data shows that pairing correlations are playing an important role in enhancing proton pair transfer. For heavier and more symmetric systems, a fusion hindrance is observed due to the dominance of the quasi-fission process. Typical quasi-fission time of few zeptoseconds are obtained. Actinide collisions are also investigated both within the TDHF approach and with the Ballian-Vénéroni prescription for fluctuation and correlation of one-body observables. The possible formation of new heavy neutron-rich nuclei in actinide collisions is discussed.

Invited Plenary Talk given at NN2012

References in corpus (16)

• Particle transfer reactions with the time-dependent Hartree-Fock theory using a particle number projection technique
• Energy dependence of nucleus-nucleus potential close to the Coulomb barrier
• Canonical-basis time-dependent Hartree-Fock-Bogoliubov theory and linear-response calculations
• Isovector Giant Dipole Resonance from the 3D Time-Dependent Density Functional Theory for Superfluid Nuclei
• Particle number fluctuations and correlations in transfer reactions obtained using the Balian-Vénéroni variational principle
• Collision dynamics of two ${}^{238}$U atomic nuclei
• Pairing Vibrations Study with the Time-Dependent Hartree-Fock-Bogoliubov theory
• A new inverse quasifission mechanism to produce neutron-rich transfermium nuclei
• Density-constrained time-dependent Hartree-Fock calculation of ${}^{16}$O+${}^{208}$Pb fusion cross sections
• Novel insights into transfer processes in the reaction 16O+208Pb at sub-barrier energies
• Probing neutron correlations through nuclear break-up
• Time-Depentent Hartree-Fock description of heavy ions fusion
• Neutron Transfer Dynamics and Doorway to Fusion in Time-Dependent Hartree-Fock Theory
• Calculation of electron-positron production in supercritical uranium-uranium collisions near the Coulomb barrier
• On nucleon exchange mechanism in heavy-ion collisions at near-barrier energies
• Actinide collisions for QED and superheavy elements with the time-dependent Hartree-Fock theory and the Balian-Vénéroni variational principle

Cited by in corpus (2)

• Formation of light exotic nuclei in low-energy multinucleon transfer reactions
• From light to hyper-heavy molecules and neutron-star crusts in a dynamical mean-field approach