title: Measurement of fast neutrons produced by high-energy X-ray beams of medical electron accelerators.
mesh_terms: D003300:Copper; D007854:Lead; D009502:Neutrons; D011874:Radiometry; D011878:Radiotherapy / Q000295:instrumentation*; D012825:Silicon; D013635:Tantalum
chemical_list: D007854:Lead; D013635:Tantalum; D003300:Copper; D012825:Silicon