Induced nuclear reactions: processes – systems – and elements – Nuclear transmutation – Gamma or charged particle activation analysis
Reexamination Certificate
2006-06-06
2006-06-06
Keith, Jack (Department: 3663)
Induced nuclear reactions: processes, systems, and elements
Nuclear transmutation
Gamma or charged particle activation analysis
C376S156000, C250S358100
Reexamination Certificate
active
07058153
ABSTRACT:
A non-destructive testing method comprises providing a specimen having at least one positron emitter therein; determining a threshold energy for activating the positron emitter; and determining whether a half-life of the positron emitter is less than a selected half-life. If the half-life of the positron emitter is greater than or equal to the selected half-life, then activating the positron emitter by bombarding the specimen with photons having energies greater than the threshold energy and detecting gamma rays produced by annihilation of positrons in the specimen. If the half-life of the positron emitter is less then the selected half-life, then alternately activating the positron emitter by bombarding the specimen with photons having energies greater then the threshold energy and detecting gamma rays produced by positron annihilation within the specimen.
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Battelle Energy Alliance, LLC
Dahl & Osterloth LLP
Keith Jack
Palabrica R
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