title: Maintaining a high 4.4-MeV gamma-ray output relative to total neutron output from an 241Am/Be source.
mesh_terms: D000576:Americium; D001608:Beryllium; D005720:Gamma Rays; D006801:Humans; D009502:Neutrons; D011835:Radiation Protection
chemical_list: D001608:Beryllium; D000576:Americium