radionuclides
Decay-emitting atomic variants
Radionuclides are atoms with unstable nuclei that emit radiation as they decay into more stable forms.
The term combines "radioactive" with "nuclide" (a specific nuclear configuration).
Radionuclides occur naturally, as with radon and uranium, or are produced artificially for medical imaging, cancer treatment, and nuclear power: The scan uses radionuclides to detect tumors.
Controlled fission apparatus
- fissionNuclear breakup releasing energy
- powerEnergy transfer rate
- fuelEnergy source material
- uranium-235Fissile nuclear isotope
plutonium-239 · criticality · breeder · moderator · coolant · enrichment · megawatts · thermal
Introduction of impurities
- exposureState of being unprotected
- falloutPost-blast atmospheric particles
- wasteUnwanted discarded material
- disposalAct of throwing away
shielding · dosimeter · safety · cleanup · storage · leakage · environmental · Chernobyl
Period for fifty-percent reduction
- alphaFirst Greek letter
- betaGreek alphabet's second letter
- gammaGreek alphabet's third
- daughterFemale child of parents
transmutation · disintegration · emission · chain · series · secular · transient · equilibrium
Medicinal radioactive substances
- technetium-99mMetastable medical radioisotope
- iodine-131Radioactive halogen isotope
- PETNuclear medicine imaging
- SPECTGamma-emitting radiotracer imaging method
tracer · imaging · therapy · oncology · diagnosis · targeted · brachytherapy · thyroid
Radioactive isotope for dating
- uranium-leadIsotopic age-determination method
- potassium-argonIsotopic age-determination technique
- geochronologyStudy of geological ages
- chronometerPrecision timekeeping instrument
age · fossil · sediment · groundwater · tracer · tritium · archaeological · geological
reactor
Controlled fission apparatus
uranium-235 · plutonium-239 · criticality · breeder · moderator · coolant · enrichment · megawatts · thermal · electricity
contamination
Introduction of impurities
- exposureState of being unprotected
- falloutPost-blast atmospheric particles
- wasteUnwanted discarded material
disposal · shielding · dosimeter · safety · cleanup · storage · leakage · environmental · Chernobyl · Fukushima
half-life
Period for fifty-percent reduction
daughter · transmutation · disintegration · emission · chain · series · secular · transient · equilibrium · activity
radiopharmaceuticals
Medicinal radioactive substances
- technetium-99mMetastable medical radioisotope
- iodine-131Radioactive halogen isotope
- PETNuclear medicine imaging
SPECT · tracer · imaging · therapy · oncology · diagnosis · targeted · brachytherapy · thyroid · biodistribution
carbon-14
Radioactive isotope for dating
- uranium-leadIsotopic age-determination method
- potassium-argonIsotopic age-determination technique
- geochronologyStudy of geological ages
chronometer · age · fossil · sediment · groundwater · tracer · tritium · archaeological · geological · paleoclimate
neutrons
Uncharged subatomic particles
isotopic · abundance · spectrometry · chart · isobar · isomer · heavy · light · natural · artificial