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Title: Method and apparatus for detecting and measuring trace impurities in flowing gases

Abstract

Trace impurities in flowing gases may be detected and measured by a dynamic atomic molecular emission spectrograph utilizing as its energy source the energy transfer reactions of metastable species, atomic or molecular, with the impurities in the flowing gas. An electronically metastable species which maintains a stable afterglow is formed and mixed with the flowing gas in a region downstream from and separate from the region in which the metastable species is formed. Impurity levels are determined quantitatively by the measurement of line and/or band intensity as a function of concentration employing emission spectroscopic techniques.

Inventors:
 [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
863324
Patent Number(s):
4148612
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; detecting; measuring; trace; impurities; flowing; gases; detected; measured; dynamic; atomic; molecular; emission; spectrograph; utilizing; energy; source; transfer; reactions; metastable; species; gas; electronically; maintains; stable; afterglow; formed; mixed; region; downstream; separate; impurity; levels; determined; quantitatively; measurement; line; band; intensity; function; concentration; employing; spectroscopic; techniques; energy transfer; energy source; trace impurities; flowing gas; flowing gases; transfer reactions; transfer reaction; purity levels; /436/356/422/

Citation Formats

Taylor, Gene W, and Dowdy, Edward J. Method and apparatus for detecting and measuring trace impurities in flowing gases. United States: N. p., 1979. Web.
Taylor, Gene W, & Dowdy, Edward J. Method and apparatus for detecting and measuring trace impurities in flowing gases. United States.
Taylor, Gene W, and Dowdy, Edward J. Mon . "Method and apparatus for detecting and measuring trace impurities in flowing gases". United States. https://www.osti.gov/servlets/purl/863324.
@article{osti_863324,
title = {Method and apparatus for detecting and measuring trace impurities in flowing gases},
author = {Taylor, Gene W and Dowdy, Edward J},
abstractNote = {Trace impurities in flowing gases may be detected and measured by a dynamic atomic molecular emission spectrograph utilizing as its energy source the energy transfer reactions of metastable species, atomic or molecular, with the impurities in the flowing gas. An electronically metastable species which maintains a stable afterglow is formed and mixed with the flowing gas in a region downstream from and separate from the region in which the metastable species is formed. Impurity levels are determined quantitatively by the measurement of line and/or band intensity as a function of concentration employing emission spectroscopic techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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