Measurement of the angular distribution of neutron-proton scattering at 10 MeV

The relative angular distribution of neutrons scattered from protons was measured at an incident neutron energy of 10 MeV at the Ohio University Accelerator Laboratory. An array of 11 detector telescopes at laboratory angles of 0–60° was used to detect recoil protons from neutron interactions with a CH2 target. Data for seven of these telescopes were obtained with one set of electronics and are presented here. These data, from 108 to 180° for the center-of-mass scattering angles, have a small slope which agrees better with angular distributions predicted by the Arndt phase shifts than with the ENDF/B-VI angular distribution.