Abstract
The influence of the structure of projectile and target nuclei on the capture cross sections was investigated for the reactions Pb and Pb. Capture cross sections were deduced by measuring the fission fragments using multiwire proportional counters. An enhancement of the capture cross sections relative to a one-dimensional barrier penetration model was observed for all reactions at energies below the interaction barriers. The enhancement is larger in the case of reactions with S than with S. This observation is explained by a stronger coupling to the vibrational states in the reactions with S. Comparing the capture cross sections and the evaporation-residue cross sections for the reactions Pb and Pb, both yielding the same compound nucleus Cf, it is shown that the latter reaction has a lower fusion probability.
- Received 24 February 2012
DOI:https://doi.org/10.1103/PhysRevC.86.064602
©2012 American Physical Society