title: Neutron beams from protons on beryllium.
abstract: Measurements of dose rate and penetration in water have been made for neutron beams produced by 30--75 MeV protons on beryllium. The effects of Polythene filters added on the target side of the collimator have also been studied. A neutron beam comparable with a photon beam from a 4--8 MeV linear accelerator can be produced with p/Be neutrons plus 5 cm Polythene filtrations, with protons in the range 50--75 MeV. This is a more economical method than use of the d/Be reaction.
mesh_terms: D001608:Beryllium; D008954:Models, Biological; D009502:Neutrons; D010315:Particle Accelerators; D011095:Polyethylenes; D011522:Protons; D011829:Radiation Dosage; D011876:Radionuclide Generators
chemical_list: D011095:Polyethylenes; D011522:Protons; D001608:Beryllium