Total Cross Sections for High-Energy Neutrons

Abstract

The total cross sections for high-energy neutrons have been determined for 12 elements (H, D, C, O, Al, Si, Cl, Ti, Fe, Cu, Hg, and Pb) for several points in the range between 60 and 110 Mev. The good-geometry attenuation experiment was conducted in the neutron beam produced by the bombardment of a beryllium target by the internal proton beam of the Harvard 95-in. synchrocyclotron. The angular and energy resolution permitted by the use of scintillation counter telescope techniques is discussed. Results are analyzed by using the optical model of the nucleus.