Abstract
Measured cross sections for the fusion of with , , and targets are analyzed in a coupled-channels approach. The data for the target above 0.1 mb are reproduced by including couplings to the low-lying and states and the mutual and two-phonon excitations of these states. The calculations become more challenging as the fusing nuclei become softer and heavier, and excitations to multi-phonon states start to play an increasingly important role. Thus it is necessary to include up to four-phonon excitations to reproduce the data for the system. Similar calculations for , and also for the symmetric system, show large discrepancies with the data. Possible ways to improve the calculations are discussed.
- Received 2 September 2005
DOI:https://doi.org/10.1103/PhysRevC.72.054607
©2005 American Physical Society