Abstract
Finite-range coupled channel calculations of proton-induced reactions on have been performed below the three-body breakup threshold, assuming that the particle core is inert. The coupling scheme included all transitions between open channels and therefore no imaginary parts of the interaction potentials were used. The calculations have revealed a complicated dynamics of the interaction at the chosen energy, with couplings to all open channels being important to generate the final cross sections. The total absorption from the elastic channel depends on the details of the interactions employed in the three-body model of and shows a strong correlation with the r.m.s. radius of The role of the exchange mechanisms was investigated within the framework of the distorted-wave Born approximation. It was found that both the triton exchange and two-neutron direct transfer mechanisms produce comparable cross sections. The investigation of the radiative capture in the potential model shows strong suppression of the transition because of the destructive interference between the external and internal contributions to the reaction amplitude and the absorption in the incident channel.
- Received 8 September 1999
DOI:https://doi.org/10.1103/PhysRevC.61.044608
©2000 American Physical Society