Effects of nuclear deformation on fusion probability in the reactions of 82Se+natCe and 76Ge+150Nd near the Coulomb barrier
Abstract
Evaporation residue (ER) cross sections for 82Se+natCe (Z1Z2=1972) were measured in the vicinity of the Coulomb barrier and the fusion probability was obtained with the aid of calculated survival probability. This fusion probability was compared with that for 76Ge+150Nd (Z1Z2=1920), which was determined with the same manner by using the data published by us. The former system represents fusion of two spherical nuclei, the latter fusion involving the prolately deformed target 150Nd. The collision of 76Ge with the side of 150Nd is the most compact configuration at touching. The system 82Se+natCe showed fusion hindrance in the form of extra-extra-push energy of 27+/-5 MeV, whereas the system 76Ge+150Nd does not show fusion hindrance at and above the Coulomb barrier energy, suggesting that the reaction starting from the compact touching point results in a higher fusion probability.
- Publication:
-
Physical Review C
- Pub Date:
- April 2001
- DOI:
- 10.1103/PhysRevC.63.044610
- Bibcode:
- 2001PhRvC..63d4610N
- Keywords:
-
- 25.60.Pj;
- 24.60.Dr;
- Fusion reactions;
- Statistical compound-nucleus reactions