Relative Biological EffectivenessLinear Energy TransferHeavy IonsCaliforniumFast NeutronsCobalt RadioisotopesHeavy Ion RadiotherapyDose-Response Relationship, RadiationRadiobiologyAlpha ParticlesAstatineNeutronsParticle AcceleratorsNuclear FissionGamma RaysRadiometryX-RaysCarbonRadiation DosageProtonsRadiotherapy DosageIonsCell SurvivalRadioisotopesCosmic RadiationQuality of LifeNeoplasms, Radiation-InducedRadiation Tolerance