Hydrogen Recoil Proportional Counter for Neutron Detection

Abstract

A proportional counter utilizing recoiling protons ejected from a thin hydrogenous radiator by elastic collision with incident neutrons is described in its design and its response. Comparison between experimental and calculated curves for sensitivity versus neutron energy, and sensitivity versus counting bias, indicate that the response of the counter is calculable. It may be used as a directional threshold neutron detector, the value of the threshold being open to arbitrary choice.