High precision fusion data for Sm are analyzed in a coupled channels treatment which includes the excitation of the lowest and states in both projectile and target. We find that certain higher-order couplings, which are often neglected in coupled channels analyses, play a significant role and improve the fit to the data. The nuclear potential which gives the best fit has a diffuseness of 0.64 fm. This is consistent with the prediction of folding models and also with the empirical expectation, based on analyses of elastic scattering data. © 1996 The American Physical Society.
- Received 22 July 1996
- Published in the issue dated December 1996
© 1996 The American Physical Society