Quantum calculations of Coulomb reorientation for sub-barrier fusion
Résumé
Classical mechanics and Time Dependent Hartree-Fock (TDHF) calculations of heavyions collisions are performed to study the rotation of a deformed nucleus in the Coulombfield of a collision partner. We show that this Coulomb reorientation is independent on the charges and the relative energy of the partners. Itonly depends upon the deformations and the respective masses. Furthermore this reorientation modifies strongly the fusion cross-section around the barrier for lightdeformed nuclei on heavy collision partners. For suchnuclei a hindrance of the sub-barrier fusion is predicted.