Neutron-Proton Scattering Using Organic Crystal Scintillation Detectors

Abstract
The angular distribution of protons recoiling from neutrons of 13.7 Mev and 28.4 Mev has been investigated in the region of 0° to 90° in the center-of-mass system. Organic scintillation crystals of anthracene and stilbene were used as both sources and detectors of the recoil protons. The angular distribution observed at 13.7 Mev is consistent with spherically symmetric scattering, while the results at 28.4 Mev show an anisotropy with a favoring of scattering of the neutrons in the backward direction.