Impact of neutron excess on near-barrier fusion in 16-20O + 12C

Sylvie Hudan (Indiana University, USA)

Reactions with light nuclei present a unique opportunity to examine the nature of extremely neutron-rich matter close to the drip-line and explore the impact on fusion, breakup, and transfer. In particular, fusion of neutron-rich light nuclei is a topic of interest in both nuclear physics and nuclear astrophysics. Recent observation of an enhancement in the fusion cross-section for 19O raises the question of the impact of the unpaired neutron and collective effect on fusion. Measurement of the fusion excitation function for at above-barrier energies using an active target approach will be discussed. This self-normalizing technique provides an angle integrated measure of the fusion cross-section. New results for 20O + 12C will be shown.