Apparatus for photon activation positron annihilation analysis

Induced nuclear reactions: processes – systems – and elements – Nuclear transmutation – Gamma or charged particle activation analysis

Reexamination Certificate

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C250S363030, C250S358100

Reexamination Certificate

active

09932531

ABSTRACT:
Non-destructive testing apparatus according to one embodiment of the invention comprises a photon source. The photon source produces photons having predetermined energies and directs the photons toward a specimen being tested. The photons from the photon source result in the creation of positrons within the specimen being tested. A detector positioned adjacent the specimen being tested detects gamma rays produced by annihilation of positrons with electrons. A data processing system operatively associated with the detector produces output data indicative of a lattice characteristic of the specimen being tested.

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