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Title: Apparatus for photon activation positron annihilation analysis

Patent ·
OSTI ID:909655
 [1]
  1. Idaho Falls, ID
+ Show Author Affiliations

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.

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):
7,231,011
Application Number:
09/932,531
OSTI ID:
909655
Country of Publication:
United States
Language:
English

References (7)

One-sided imaging of large, dense objects using 511-keV photons from induced-pair production journal June 1998
Study of the Van Cittert and Gold iterative methods of deconvolution and their application in the deconvolution of experimental spectra of positron annihilation
  • Bandžuch, P.; Morháč, M.; Krištiak, J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 384, Issue 2-3 https://doi.org/10.1016/S0168-9002(96)00874-1
journal January 1997
On the potential of photon induced annihilation photons for inspection of engineering structures journal October 1997
Analysis of positron annihilation lifetime data presented as a sum of convoluted exponentials with the program “SPLMOD”
  • Zhu, Yongkang; Gregory, Roger B.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 284, Issue 2-3 https://doi.org/10.1016/0168-9002(89)90316-1
journal December 1989
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
Analysis of positron annihilation lifetime data by numerical laplace inversion with the program CONTIN
  • Gregory, Roger B.; Zhu, Yongkang
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 290, Issue 1 https://doi.org/10.1016/0168-9002(90)90358-D
journal May 1990
A positron annihilation lifetime spectroscopy study of porous silicon using a continuous lifetime fitting algorithm journal January 1996

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