Elastic scattering in rotating thorium plate
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Overview
11.5 MeV photons are generated uniformly on the curved face of a cylinder with a direction of travel inward and normal to the surface. Enclosed within the cylinder is a cuboid thorium target that is 4 cm high along the cylindrical axis, 0.5 mm thick, and 2 cm wide.
Result
On average, photons see a target thickness of 0.72 mm and neutrons travel though 0.54 mm of thorium. Only 2.5% of neutrons underwent a scattering event, which means 95% of neutrons escape the target unmolested.
