Differential proton-proton scattering cross section for energies between 1.9Â MeV and 50Â MeV

We present a phase shift analysis of differential elastic proton-proton scattering cross sections (dσ/dΩ)pp in the energy range from 1.9 MeV to 50 MeV and laboratory scattering angles θlab=15-75°. That results in an accurate representation of the experimental data by an analytical function (χred2=1.95). The average statistical error of the resulting data fit is 0.2%. The evaluation is representing the experimental data better than the evaluated cross section by the framework of the R-matrix theory as available from the ENDF database (χred2=6.98). For a fast evaluation we extract an E,θ-matrix for (dσ/dΩ)pp with a negligible interpolation error. These data may be used for data evaluation when using proton-proton scattering for hydrogen detection in material analysis.