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Title: Method for determining the concentration of atomic species in gases and solids

Abstract

Method is described for determining the concentration of atomic species in gases and solids. The method involves measurement of at least two emission intensities from a species in a sample that is excited by incident laser radiation. This generates a plasma therein after a sufficient time period has elapsed and during a second time period, permits an instantaneous temperature to be established within the sample. The concentration of the atomic species to be determined is then derived from the known emission intensity of a predetermined concentration of that species in the sample at the measured temperature, a quantity which is measured prior to the determination of the unknown concentration, and the actual measured emission from the unknown species, or by this latter emission and the emission intensity of a species having known concentration within the sample such as nitrogen for gaseous air samples. 4 figs.

Inventors:
Issue Date:
Research Org.:
Laser Diagnostics
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
570483
Patent Number(s):
5715053
Application Number:
PAN: 8-553,761
Assignee:
PTO; SCA: 400102; PA: EDB-98:029586; SN: 98001912320
DOE Contract Number:  
FG02-94ER81671
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 3 Feb 1998
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; EMISSION SPECTROSCOPY; SOLIDS; GASES; MEASURING METHODS; QUANTITATIVE CHEMICAL ANALYSIS; CALIBRATION; EMISSION SPECTRA; LASER RADIATION

Citation Formats

Loge, G W. Method for determining the concentration of atomic species in gases and solids. United States: N. p., 1998. Web.
Loge, G W. Method for determining the concentration of atomic species in gases and solids. United States.
Loge, G W. Tue . "Method for determining the concentration of atomic species in gases and solids". United States.
@article{osti_570483,
title = {Method for determining the concentration of atomic species in gases and solids},
author = {Loge, G W},
abstractNote = {Method is described for determining the concentration of atomic species in gases and solids. The method involves measurement of at least two emission intensities from a species in a sample that is excited by incident laser radiation. This generates a plasma therein after a sufficient time period has elapsed and during a second time period, permits an instantaneous temperature to be established within the sample. The concentration of the atomic species to be determined is then derived from the known emission intensity of a predetermined concentration of that species in the sample at the measured temperature, a quantity which is measured prior to the determination of the unknown concentration, and the actual measured emission from the unknown species, or by this latter emission and the emission intensity of a species having known concentration within the sample such as nitrogen for gaseous air samples. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {2}
}