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Title: Nondestructive examination using neutron activated positron annihilation

Abstract

A method is provided for performing nondestructive examination of a metal specimen using neutron activated positron annihilation wherein the positron emitter source is formed within the metal specimen. The method permits in situ nondestructive examination and has the advantage of being capable of performing bulk analysis to determine embrittlement, fatigue and dislocation within a metal specimen.

Inventors:
 [1];  [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
Lockheed Martin Idaho Technologies Company
OSTI Identifier:
873514
Patent Number(s):
6178218
Assignee:
Bechtel BWXT Idaho, 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 G21 - NUCLEAR PHYSICS G21G - CONVERSION OF CHEMICAL ELEMENTS
DOE Contract Number:  
AC94-ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nondestructive; examination; neutron; activated; positron; annihilation; method; provided; performing; metal; specimen; emitter; source; formed; permits; situ; advantage; capable; bulk; analysis; determine; embrittlement; fatigue; dislocation; method permits; nondestructive examination; metal specimen; neutron activated; positron annihilation; positron emitter; activated positron; /376/250/

Citation Formats

Akers, Douglas W, and Denison, Arthur B. Nondestructive examination using neutron activated positron annihilation. United States: N. p., 2001. Web.
Akers, Douglas W, & Denison, Arthur B. Nondestructive examination using neutron activated positron annihilation. United States.
Akers, Douglas W, and Denison, Arthur B. Mon . "Nondestructive examination using neutron activated positron annihilation". United States. https://www.osti.gov/servlets/purl/873514.
@article{osti_873514,
title = {Nondestructive examination using neutron activated positron annihilation},
author = {Akers, Douglas W and Denison, Arthur B},
abstractNote = {A method is provided for performing nondestructive examination of a metal specimen using neutron activated positron annihilation wherein the positron emitter source is formed within the metal specimen. The method permits in situ nondestructive examination and has the advantage of being capable of performing bulk analysis to determine embrittlement, fatigue and dislocation within a metal specimen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Works referenced in this record:

Postirradiation Recovery of a Reactor Pressure Vessel Steel Investigated by Positron Annihilation and Microhardness Measurements
journal, October 1993