SENSITIVE TRITIUM COUNTING WITH A PROPANE PROPORTIONAL COUNTING SYSTEM
Comparison of the minimum detectable amount of tritium by different counting devices shows that proportional gas counting is the most sensitive method at the present time. A new method of tritium proportional gas counting using propane as counting gas is described. The propane is formed by hydrogenation of propyne with palladium oxide as a catalyst. Using a 2.5-liter counter filled with propane at 2.2 atm pressure requires a sample size of half a mole of H/sub 2/O or H/sub 2/. For a background of 5.3 cpm, this results in a minimum detectable concentration, without isotopic enrichment of tritium, of 3 TU equal to plus or minus 2 sigma for a counting time of 1000 min, where 1 TU = T/ H ratio of 10/sup -18/. (auth)
- Research Organization:
- Univ. of California, Los Angeles
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-037440
- OSTI ID:
- 4659402
- Journal Information:
- Rev. Sci. Instr., Journal Name: Rev. Sci. Instr. Vol. Vol: 34
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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