Method for non-destructive testing

Akers, Douglas W

Title: Method for non-destructive testing

Patent · Tue Aug 30 00:00:00 EDT 2011

OSTI ID:1023914

Akers, Douglas W ^[1]

Idaho Falls, ID

Non-destructive testing method may include providing a source material that emits positrons in response to bombardment of the source material with photons. The source material is exposed to photons. The source material is positioned adjacent the specimen, the specimen being exposed to at least some of the positrons emitted by the source material. Annihilation gamma rays emitted by the specimen are detected.

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Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC07-99ID13727

Assignee:: Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Number(s):: 8,009,787

Application Number:: 10/869,794

OSTI ID:: 1023914

Country of Publication:: United States

Language:: English

References (6)

One-sided imaging of large, dense objects using 511-keV photons from induced-pair production Tavora, L. M. N.; Morgado, R. E.; Estep, R. J. IEEE Transactions on Nuclear Science, Vol. 45, Issue 3 https://doi.org/10.1109/23.682689	journal	June 1998
On the potential of photon induced annihilation photons for inspection of engineering structures Gilboy, W. B.; Harding, G.; Távora, L. M. N. Applied Radiation and Isotopes, Vol. 48, Issue 10-12 https://doi.org/10.1016/S0969-8043(97)00163-2	journal	October 1997
Properties of ( $γ, n$ ) Cross Sections Marshall, L. Physical Review, Vol. 83, Issue 2 https://doi.org/10.1103/PhysRev.83.345	journal	July 1951
Photoneutron Cross Sections for ${}^{23}{Na}$ and ${}^{25}{Mg}$ Alvarez, R. A.; Berman, B. L.; Lasher, D. R. Physical Review C, Vol. 4, Issue 5 https://doi.org/10.1103/PhysRevC.4.1673	journal	November 1971
The Reaction $N^{14} (γ, 2 n) N^{12}$ Panofsky, Wolfgang K. H.; Reagan, Daryl Physical Review, Vol. 87, Issue 3 https://doi.org/10.1103/PhysRev.87.543	journal	August 1952
Photon-induced positron annihilation radiation (PIPAR) — A novel gamma-ray imaging technique for radiographically dense materials Harding, G.; Gilboy, W.; Ulmer, B. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 398, Issue 2-3 https://doi.org/10.1016/S0168-9002(97)00901-7	journal	October 1997

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