Brazilian Journal of Physics
versión impresa ISSN 0103-9733
CARDENAS, W.H.Z. et al. Schematic coupled-channel calculations for nuclear reactions with unstable beams. Braz. J. Phys. [online]. 2004, vol.34, n.3b, pp. 1254-1264. ISSN 0103-9733. http://dx.doi.org/10.1590/S0103-97332004000600017.
We study nuclear reactions in collisions of unstable projectiles with heavy targets. For this purpose, we use a simple approximation for the breakup channel and treat two-neutron halos as a single particle. We then evaluate cross sections for collisions of 6He projectiles with targets of 238U and 209Bi. Comparing our results with recently measured fusion cross sections, we conclude that the large enhancement observed in 6He+238U fusion at sub-barrier energies cannot be explained by the coupling with the breakup channel. The effects of the halo on other reaction channels are also investigated. Coulomb-nuclear interference in the breakup channel is discussed.