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Carbon-14
Physical Data:
Pure Beta Emitter
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156.5
keV (max.)
49.47 keV (avg.) |
- Radioactive Half Life
- Biological Half Life
- Effective Half Life
- Max. beta range in air
- Max. beta range in water
- Max. beta range in plastic
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5730
years
12 days
40 days (unbound) 12 days (bound)
21.9 cm
0.28 mm
0.25 mm |
Radiological Data:
- 1% of beta particles energy transmitted
through dead layer of skin
- Critical organ: fat tissue
- Internal exposure is primary concern
Shielding:
- None required (plastic can be used for
beta removal)
Survey Instrumentation:
- Liquid Scintillation Counter (LSC)
- LS window: 0 to 670
- LS efficiency: 96%
- Thin window G-M survey meter
Regulatory Compliance:
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2400 µCi:
(by ingestion)
2000 µCi: (by inhalation) |
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1 x 10 -6 µCi/mL |
Special Considerations:
There is a possibility that some organic
compounds can be absorbed through gloves. Care
needs to be taken not to generate carbon
dioxide which could be inhaled. Urinalysis
is recommended after a spill or suspected
intake.
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