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Title: Apparatus for photon activation positron annihilation analysis

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.

Inventors:
 [1]
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  1. Idaho Falls, ID
Issue Date:
Research Org.:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
909655
Patent Number(s):
7231011
Application Number:
09/932,531
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
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DOE Contract Number:  
AC07-99ID13727
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Akers, Douglas W. Apparatus for photon activation positron annihilation analysis. United States: N. p., 2007. Web.
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Akers, Douglas W. Apparatus for photon activation positron annihilation analysis. United States.
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Akers, Douglas W. Tue . "Apparatus for photon activation positron annihilation analysis". United States. https://www.osti.gov/servlets/purl/909655.
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@article{osti_909655,
title = {Apparatus for photon activation positron annihilation analysis},
author = {Akers, Douglas W},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {6}
}
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Works referenced in this record:

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
journal, January 1997

  • 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

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”
journal, December 1989

  • 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

Photon-induced positron annihilation radiation (PIPAR) — A novel gamma-ray imaging technique for radiographically dense materials
journal, October 1997

  • 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

Analysis of positron annihilation lifetime data by numerical laplace inversion with the program CONTIN
journal, May 1990

  • 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

A positron annihilation lifetime spectroscopy study of porous silicon using a continuous lifetime fitting algorithm
journal, January 1996

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