A nucleon-nucleon transition matrix fitted to the 50-400 MeV differential cross section and polarization data is presented. The transition operator obtained is a sum of spin- and isospin-dependent central, two-particle spin-orbit, and tensor complex local interactions with Yukawa radial shapes. The application of the transition operator is illustrated and discussed for medium energy nucleon-nucleus inelastic scattering. A comparison is made of the inelastic scattering results with results obtained for electron, pion, and kaon probes. The importance of exchange even at medium energies is stressed. The derived $N-N$ transition operator can be employed in microscopic polarization predictions and is appropriate for explicitly calculating exchange effects.

[NUCLEAR REACTIONS Deduced nucleon-nucleon transition matrix from two body data. ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(p,p^{\prime })$, $E=156\mathrm{}$ MeV; ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}(p,p^{\prime })$, $E=134\mathrm{}$ MeV; calculated $\sigma \left(\theta \right)$. Comparison with electron, kaon, and pion results.]

• Received 15 September 1977

DOI:https://doi.org/10.1103/PhysRevC.17.237