Coupled-channels description of multinucleon transfer and fusion reactions at energies near and far below the Coulomb barrier

Abstract

We investigate heavy-ion multinucleon transfer reactions using the coupled-channels formalism. We first use the semi-classical approximation and show that a direct coupling between the entrance and the pair transfer channels improves a fit to the experimental one- and two-neutron transfer cross sections for the 40Ca+96Zr and 60Ni+116Sn systems. We then discuss the validity of the perturbative approach and highlight the effect of high order terms. The effect of absorption is also investigated for energies around the Coulomb barrier. Finally, we use a quantal coupled-channels approach to achieve a simultaneous description of the fusion cross sections and the transfer probabilities for the 40Ca+96Zr reaction. We find a significant effect of the couplings to the collective excited states on the transfer probabilities around the Coulomb barrier.

11 pages, 11 figures

References in corpus (8)

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Cited by in corpus (8)

• Recent experimental results in sub- and near-barrier heavy ion fusion reactions
• Dynamical effects in fusion with exotic nuclei
• Revised analysis of ${}^{40}$Ca+${}^{96}$Zr fusion reactions
• Examining empirical evidence of the effect of superfluidity on the fusion barrier
• Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces
• Enhancement factor for two-neutron transfer reactions with a schematic coupled-channels model
• Evolving theoretical descriptions of heavy-ion fusion :from phenomenological to microscopic approaches
• The self-consistent analysis for sub-barrier fusion enhancement effect in Ca + Ca and Ni + Ni