Method for radioactivity monitoring

Details Method for radioactivity monitoring Method for radioactivity monitoring

1975-04-28

1976-10-26

Dixon, Harold A.

Radiant energy

Geological testing or irradiation

250363R, G01T 120, G01V 500

Patent

active

039886158

ABSTRACT:
The disclosure relates to a method for analyzing uranium and/or thorium contents of liquid effluents preferably utilizing a sample containing counting chamber. Basically, 185.7-keV gamma rays following .sup.235 U alpha decay to .sup.231 Th which indicate .sup.235 U content and a 63-keV gamma ray doublet found in the nucleus of .sup.234 Pa, a granddaughter of .sup.238 U, are monitored and the ratio thereof taken to derive uranium content and isotopic enrichment .sup.235 U/.sup.235 U + .sup.238 U) in the liquid effluent. Thorium content is determined by monitoring the intensity of 238-keV gamma rays from the nucleus of .sup.212 Bi in the decay chain of .sup.232 Th.

REFERENCES:
patent: 2735946 (1956-02-01), Stratford et al.
patent: 2897368 (1959-07-01), Lundberg

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