A Semiphenomenological Proton-Proton Potential

An energy independent potential is constructed which reproduces all available p-p data up to 310 Mev. At 310 Mev the potential predicts the phase shift solution 1 of MacGregor et al. The potential includes the central, tensor, linear and quadratic LS potentials. The quadratic LS potential is manifestly required in the singlet even parity state where the linear LS potential vanishes. The linear LS potential turns out to be more singular but of shorter range than previously thought. It appears now that the p-p data below 310 Mev can be understood in terms of a potential consistent in all respects with the pion theory of nuclear forces.