Skip to Content
Find More Like This
Return to Search

Radioactive anomaly discrimination from spectral ratios

United States Patent

8,513,618
August 20, 2013
View the Complete Patent at the US Patent & Trademark Office
A method for discriminating a radioactive anomaly from naturally occurring radioactive materials includes detecting a first number of gamma photons having energies in a first range of energy values within a predetermined period of time and detecting a second number of gamma photons having energies in a second range of energy values within the predetermined period of time. The method further includes determining, in a controller, a ratio of the first number of gamma photons having energies in the first range and the second number of gamma photons having energies in the second range, and determining that a radioactive anomaly is present when the ratio exceeds a threshold value.
Maniscalco; James (Laquinta, CA), Sjoden; Glenn (Sandy Springs, GA), Chapman; Mac Clements (Ranchos Palos Verdes, CA)
Quintell of Ohio, LLC (Beachwood, OH)
13/ 338,538
20120161028
December 28, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT At least a portion of this invention was made with Government support under Cooperative Agreement No. DE-FC52-09NA29293 with the Department of Energy and the National Nuclear Security Administration. The Government may have certain rights in this application.