Method for radioactivity monitoring
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.
- Inventors:
-
- Los Alamos, NM
- Santa Fe, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 862683
- Patent Number(s):
- 3988615
- Application Number:
- 05/572,042
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; radioactivity; monitoring; disclosure; relates; analyzing; uranium; thorium; contents; liquid; effluents; preferably; utilizing; sample; containing; counting; chamber; basically; 185; 7-kev; gamma; rays; following; 235; alpha; decay; 231; indicate; content; 63-kev; ray; doublet; found; nucleus; 234; granddaughter; 238; monitored; ratio; derive; isotopic; enrichment; effluent; determined; intensity; 238-kev; 212; chain; 232; uranium content; sample containing; gamma rays; gamma ray; disclosure relates; liquid effluent; isotopic enrichment; kev gamma; /250/
Citation Formats
Umbarger, C John, and Cowder, Leo R. Method for radioactivity monitoring. United States: N. p., 1976.
Web.
Umbarger, C John, & Cowder, Leo R. Method for radioactivity monitoring. United States.
Umbarger, C John, and Cowder, Leo R. Tue .
"Method for radioactivity monitoring". United States. https://www.osti.gov/servlets/purl/862683.
@article{osti_862683,
title = {Method for radioactivity monitoring},
author = {Umbarger, C John and Cowder, Leo R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 26 00:00:00 EDT 1976},
month = {Tue Oct 26 00:00:00 EDT 1976}
}