The Kallio-Kolltveit interaction is used as the effective interaction in a distorted-wave-approximation analysis of a few transitions in the reactions ${\mathrm{C}}^{12}(p,p^{\prime })$ and ${\mathrm{Ca}}^{40}(p,p^{\prime })$ at energies ranging from 25 to 55 MeV, and a comparison is made with results obtained using Yukawa interactions parametrized on the basis of low-energy nucleon-nucleon and nuclear data. It is concluded that the Kallio-Kolltveit interaction gives a good account of the basic features of the reactions, whereas the other interactions considered lead to somewhat poorer overall agreement with experiment.

• Received 20 February 1969

DOI:https://doi.org/10.1103/PhysRevLett.22.895