Phase relations in (d,p) reactions

The angular distributions in (d,p) reactions with the target nucleus 12C at energies of the incident deuterons up to 20 MeV are studied. The distributions are compared with predictions of the standard DWBA, the sudden approximation, and model calculations within the latter. The study supports the notion to subject the sudden approximation to some changes in its treatment of the deuteron break-up. (author)