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Title: Method for on-line evaluation of materials using prompt gamma ray analysis

Abstract

A method for evaluating a material specimen comprises: Mounting a neutron source and a detector adjacent the material specimen; bombarding the material specimen with neutrons from the neutron source to create prompt gamma rays within the material specimen, some of the prompt gamma rays being emitted from the material specimen, some of the prompt gamma rays resulting in the formation of positrons within the material specimen by pair production; collecting positron annihilation data by detecting with the detector at least one emitted annihilation gamma ray resulting from the annihilation of a positron; storing the positron annihilation data on a data storage system for later retrieval and processing; and continuing to collect and store positron annihilation data, the continued collected and stored positron annihilation data being indicative of an accumulation of lattice damage over time.

Inventors:
 [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1013824
Patent Number(s):
7630469
Application Number:
US Patent Application 10/788,743
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
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Akers, Douglas W. Method for on-line evaluation of materials using prompt gamma ray analysis. United States: N. p., 2009. Web.
Akers, Douglas W. Method for on-line evaluation of materials using prompt gamma ray analysis. United States.
Akers, Douglas W. Tue . "Method for on-line evaluation of materials using prompt gamma ray analysis". United States. https://www.osti.gov/servlets/purl/1013824.
@article{osti_1013824,
title = {Method for on-line evaluation of materials using prompt gamma ray analysis},
author = {Akers, Douglas W},
abstractNote = {A method for evaluating a material specimen comprises: Mounting a neutron source and a detector adjacent the material specimen; bombarding the material specimen with neutrons from the neutron source to create prompt gamma rays within the material specimen, some of the prompt gamma rays being emitted from the material specimen, some of the prompt gamma rays resulting in the formation of positrons within the material specimen by pair production; collecting positron annihilation data by detecting with the detector at least one emitted annihilation gamma ray resulting from the annihilation of a positron; storing the positron annihilation data on a data storage system for later retrieval and processing; and continuing to collect and store positron annihilation data, the continued collected and stored positron annihilation data being indicative of an accumulation of lattice damage over time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {12}
}

Works referenced in this record:

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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

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

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