ndScattering at 180° for Neutron Energies from 200 to 800 MeV

Abstract

We have measured the cross section for neutron-deuteron elastic scattering over the incident energy range 200-800 MeV. Preliminary results for the extreme back angles (${{\theta }_n}^{*}>~175°$) show a striking shoulder in the excitation function for neutron energies 300-600 MeV. Comparison is made with calculations using the Craigie-Wilkin triangle-diagram technique.