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Carbon-14

Carbon-14. Characteristics. Radioactive half-life: 5730 years Decay mechanism: Beta emission Energy: Emax = 156 keV Eavg = 49 keV Contamination monitoring: Thin window Geiger-Mueller detector, liquid scintillation counter for wipe surveys Dosimetry : Urinalysis. Diffusiveness.

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Carbon-14

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  1. Carbon-14

  2. Characteristics • Radioactive half-life: 5730 years • Decay mechanism: Beta emission • Energy: Emax = 156 keV Eavg = 49 keV • Contamination monitoring: Thin window Geiger-Mueller detector, liquid scintillation counter for wipe surveys • Dosimetry: Urinalysis

  3. Diffusiveness • Some C-14 labeled compounds can penetrate gloves and skin. • Wearing two pairs of gloves and changing the outer pair every fifteen or twenty minutes will reduce the chances of absorption through the skin

  4. Detection Difficulty • C-14 may be difficult to distinguish from S-35. If both nuclides are being used in the same laboratory. • Establish controls to ensure they are kept separate. If "unknown" contamination is found, treat it as C-14.

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