Phase-Shift Analysis of Data on Nucleon-Nucleon Scattering at Low Energies

The use of a polarized proton target (PPT) in experiments below 30 MeV opens new possibilities for investigating deviations from pure $S$ scattering, occurring at these energies. It seems highly probable, that a detailed investigation of $P$- and $D$-state nucleon interactions at 10-20 MeV, will make it possible to extend the region, in which the scattering amplitude is determined unambiguously to energies, at which the nucleons interact practically only in the $S$ state, so that the phase-shift analysis is considerably simpler. It is therefore important to perform a phase-shift analysis of the existing experimental data in order to obtain information necessary for the planning of future experiments. This has been done at 9.7, 14.5, and 18.2 MeV.