Effect of Stripping Channels upon the Elastic Scattering of Deuterons for the Nucleus of Calcium

Stripping channels are phenomenologically coupled to the incident deuteron channel and the effect upon the elastic cross section is calculated for incident energies at 7, 11, 12.8, 14.3, and 22 MeV. Only the stripping to the $2p$ states in ⁴¹Ca is explicitly considered, and the corresponding stripping cross sections are also obtained. The spins of all particles are set equal to zero, and the nonorthgonality between stripping and deuteron channels is ignored to a large extent. It is found that the deuteron amplitude is significantly reduced in the nuclear interior compared to that calculated with an optical model. This reduction has an effect upon the stripping cross section which is reminiscent of a cutoff in distorted-wave Born approximation calculations, but does not appreciably affect the main stripping peaks. The agreement with experiment is not unreasonable.