In certain nuclear collisions it is possible for particle transfer processes to occur for which the reaction products are indistinguishable from the initial participants in the collisions. In such cases the amplitude for the transfer process is a coherent addition to the optical model elastic amplitude. We use DWBA analysis to calculate the transfer matrix element. Two methods for combining the DWBA transfer and optical model elastic amplitudes are compared. The first method treats the transfer matrix element as the cross channel element of the K-matrix while the second uses it as the cross channel element of the T-matrix. The K-matrix approach includes in some measure the effects of repeated transfer processes. We calculated elastic scattering angular distributions for several nuclei at energies slightly above the Coulomb barrier and find that this method does reproduce the observed structure at backward angles. Our results indicate that for these cases only single transfer is important.
ASJC Scopus subject areas
- Nuclear and High Energy Physics