Proton-Deuteron Scattering at 5.1 Mev and Deuteron-Proton Scattering at 10.2 Mev

A photographic scattering chamber has been used to study the elastic scattering of 5.1-Mev protons by deuterium and 10.2-Mev deuterons by hydrogen, these being the same process in the center-of-mass system. Differential cross sections were obtained from 16.4^∘{} to 172.9^∘{}. These are in good agreement with other experimental data at about the same energy. Comparison is made with the theoretical angular distribution due to Buckingham, Hubbard, and Massey, based on a symmetrical exchange force. Agreement is close at this energy, favoring exchange rather than ordinary force theories. However, at higher energies ({~}10-Mev p-d) the BHM calculations do not represent the interaction satisfactorily.