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Nondestructive examination using neutron activated positron annihilation

United States Patent

January 23, 2001
View the Complete Patent at the US Patent & Trademark Office
A method is provided for performing nondestructive examination of a metal specimen using neutron activated positron annihilation wherein the positron emitter source is formed within the metal specimen. The method permits in situ nondestructive examination and has the advantage of being capable of performing bulk analysis to determine embrittlement, fatigue and dislocation within a metal specimen.
Akers; Douglas W. (Idaho Falls, ID), Denison; Arthur B. (Idaho Falls, ID)
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
09/ 314,602
May 19, 1999
CONTRACTUAL ORIGIN OF THE INVENTION The United States government has rights in this invention pursuant to Contract No. DE-AC-94ID13223 between the United States Department of Energy and Lockheed Martin Idaho Technologies Company.