Quantum calculations of Coulomb reorientation for sub-barrier fusion

Abstract

Classical mechanics and Time Dependent Hartree-Fock (TDHF) calculations of heavy ions collisions are performed to study the rotation of a deformed nucleus in the Coulomb field of its partner. This reorientation is shown to be independent on charges and relative energy of the partners. It only depends upon the deformations and inertias. TDHF calculations predict an increase by 30% of the induced rotation due to quantum effects while the nuclear contribution seems negligible. This reorientation modifies strongly the fusion cross-section around the barrier for light deformed nuclei on heavy collision partners. For such nuclei a hindrance of the sub-barrier fusion is predicted.

arXiv commentaccepted for publication in Physical Review Letter

References in corpus (2)

• A program for coupled-channels calculations with all order couplings for heavy-ion fusion reactions
• Applicability of the orientation average formula in heavy-ion fusion reactions of deformed nuclei

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