Excitation Functions for the Scattering of Protons and Deuterons by Be and Mg

Absolute differential cross sections are given for the elastic and inelastic scattering by Mg of protons with energies between 3.0 and 6.5 MeV and of deuterons with energies between 4.0 and 7.8 MeV. These were taken at an angle of 70° in the laboratory coordinates. Similar cross sections are given for protons scattered elastically and inelastically by beryllium at 90°. The levels giving rise to inelastic scattering have Q values of −1.37±0.04 MeV and −2.43±0.05 MeV for magnesium and beryllium respectively. The marked difference of excitation function for protons and deuterons is noted and a discussion of possible mechanisms involved is given.