Angular distributions for elastic scattering of neutrons by protons were measured with a counter telescope between 71 and 158° (c.m.) for neutron energies of 24.0 and 27.2 MeV. The angular distributions agreed with the distributions predicted by Hopkins and Breit. The measured anisotropies, $\left[\frac{\sigma \left(180\mathrm{}°\right)}{\sigma \left(90\mathrm{}°\right)}\right]-1\mathrm{}$, were 0.135±0.014 and 0.183±0.015 at 24.0 and 27.2 MeV, respectively.

• Received 21 September 1972

DOI:https://doi.org/10.1103/PhysRevC.7.1306