Résumé du preprint DAPNIA-07-40

DAPNIA-07-40
Coupled channels effects in elastic scattering and near-barrier fusion induced by weakly bound nuclei and exotic halo nuclei.
C. Beck, N. Keeley, A. Diaz-Torres
The influence on fusion of coupling to the breakup
process is investigated for reactions where at 
least one of the colliding nuclei has a 
sufficiently low binding energy for breakup to
become an important process. Elastic scattering,
excitation functions for sub- and near-barrier
fusion cross sections, and breakup yields are
analyzed for 6,7Li + 59Co. Continuum-Discretized
Coupled-Channels (CDCC) calculations describe
well the data at and above the barrier. Elastic
scattering with 6Li (as compared to 7Li) indicates
the significant role of breakup for weakly bound
projectiles. A study of 4,6He induced fusion
reactions with a three-body CDCC method for the
6He halo nucleus is presented. The relative
importance of breakup and bound-state structure 
effects on total fusion is discussed.

 

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