RadiumFast NeutronsNeutronsNeutron DiffractionWater Pollution, RadioactiveRadiotherapy, High-EnergyNuclear FissionWater Pollutants, RadioactiveTritiumNuclear PhysicsLinear Energy TransferNeutron Capture TherapyRelative Biological EffectivenessBoron Neutron Capture TherapyBackground RadiationNeutron Activation AnalysisCell NucleusCobalt RadioisotopesDose-Response Relationship, RadiationNeoplasms, Radiation-InducedBoronScattering, Radiation