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Nuclear radiation-warning detector that measures impedance

United States Patent

June 4, 2013
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
This invention is a nuclear radiation-warning detector that measures impedance of silver-silver halide on an interdigitated electrode to detect light or radiation comprised of alpha particles, beta particles, gamma rays, X rays, and/or neutrons. The detector is comprised of an interdigitated electrode covered by a layer of silver halide. After exposure to alpha particles, beta particles, X rays, gamma rays, neutron radiation, or light, the silver halide is reduced to silver in the presence of a reducing solution. The change from the high electrical resistance (impedance) of silver halide to the low resistance of silver provides the radiation warning that detected radiation levels exceed a predetermined radiation dose threshold.
Savignac; Noel Felix (Albuquerque, NM), Gomez; Leo S. (Albuquerque, NM), Yelton; William Graham (Sandia Park, NM), Robinson; Alex (Albuquerque, NM), Limmer; Steven (Albuquerque, NM)
12/ 655,173
December 24, 2009
STATEMENT REGARDING STATE SPONSORED R & D This invention was made with Government support under Contract No. 00 DE-AC04-94-AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.