Direct interaction theory of inelastic scattering. Part I

In this paper the direct interaction theory of inelastic scattering of nucleons on nuclei is developed. The method of distorted waves is required since the plane wave approximation for the projectile is not sufficient for a detailed analysis of these processes. Several interesting selection rules are derived and comparison of these rules with experiments are presented. In particular, it is shown how information about level spins in nuclei can be derived from inelastic scattering experiments