Method for radioactivity monitoring
Patent
·
OSTI ID:862683
- Los Alamos, NM
- Santa Fe, NM
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.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 3988615
- Application Number:
- 05/572,042
- OSTI ID:
- 862683
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/250/
185
212
231
232
234
235
238
238-kev
63-kev
7-kev
alpha
analyzing
basically
chain
chamber
containing
content
contents
counting
decay
derive
determined
disclosure
disclosure relates
doublet
effluent
effluents
enrichment
following
found
gamma
gamma ray
gamma rays
granddaughter
indicate
intensity
isotopic
isotopic enrichment
kev gamma
liquid
liquid effluent
method
monitored
monitoring
nucleus
preferably
radioactivity
ratio
ray
rays
relates
sample
sample containing
thorium
uranium
uranium content
utilizing
185
212
231
232
234
235
238
238-kev
63-kev
7-kev
alpha
analyzing
basically
chain
chamber
containing
content
contents
counting
decay
derive
determined
disclosure
disclosure relates
doublet
effluent
effluents
enrichment
following
found
gamma
gamma ray
gamma rays
granddaughter
indicate
intensity
isotopic
isotopic enrichment
kev gamma
liquid
liquid effluent
method
monitored
monitoring
nucleus
preferably
radioactivity
ratio
ray
rays
relates
sample
sample containing
thorium
uranium
uranium content
utilizing