SUB-BARRIER FUSION: DOES REARRANGEMENT OF NEUTRONS PLAY A ROLE?

摘要

Different factors influencing the sub-barrier fusion enhancement owing to neutron rearrangement with positive Q values are studied. It was found that opposite to existing opinion the presence of positive Q values is necessary but not sufficient to observe enhancement of the sub-barrier fusion. "Rigidity" of colliding nuclei with respect to collective excitations plays a crucial role for the sub-barrier fusion enhancement due to neutron rearrangement. A special attention is paid to the peculiarities of fusion of light exotic nuclei.