Measurement of the Energy of Isotropic Fast Neutrons with Li6 Loaded Plates

Abstract

100‐micron E1 and C2 Ilford plates loaded with enriched Li⁶ were exposed to neutrons from Li⁷(p, n)Be⁷ and from H³(p, n)He³. The plates were rotated to mockup isotropic incidence. Neutron energies ranged from 200 to 1500 kev. The plates were faded and developed so as to obtain good triton‐alpha discrimination. Peaks having widths from 100 to 300 kev at half‐maximum were obtained, depending upon neutron energy and selection criteria.