Effects of nuclear deformation on fusion probability in the reactions of ^{82}Se+^{nat}Ce and ^{76}Ge+^{150}Nd near the Coulomb barrier
Abstract
Evaporation residue (ER) cross sections for ^{82}Se+^{nat}Ce (Z_{1}Z_{2}=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 ^{76}Ge+^{150}Nd (Z_{1}Z_{2}=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 ^{150}Nd. The collision of ^{76}Ge with the side of ^{150}Nd is the most compact configuration at touching. The system ^{82}Se+^{nat}Ce showed fusion hindrance in the form of extraextrapush energy of 27+/5 MeV, whereas the system ^{76}Ge+^{150}Nd 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 compoundnucleus reactions