Temperature resolved molecular emission spectroscopy of materials
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsRobert L. Wright, Jr., Costandy S. Saba, David W. Johnson, James D. Wolf
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Abstract
System and method for temperature resolved molecular emission spectroscopy of solid, liquid or gaseous materials are described wherein a sample is vaporized and decomposed, and the vaporous sample is transported into a combustion flame; a spectrum of intensity of the optical emission from the flame at a selected wavelength versus temperature of the sample define molecular peaks which are characteristic of the sample material and allows both qualitative and quantitative analysis of the sample.
Claims17
A temperature resolved molecular emission spectrometer system, comprising:
- (a) a controllably heated crucible for vaporizing a sample material for analysis;
- (b) means for measuring the temperature of said heated crucible;
- (c) means for supporting a combustion flame near said heated crucible;
- (d) a source of carrier gas;
- (e) conduit means for conducting said carrier gas past said heated crucible and for carrying the vapor of said sample material into said flame;
- (f) an optical detector disposed near said flame for detecting the optical emission from said flame;
- and
- (g) an optical filter disposed between said flame and said detector, said filter selected to pass wavelength bands characteristic of said sample material.
A temperature resolved molecular emission spectrometer system, comprising:
- (a) a controllably heated crucible for vaporizing a sample material for analysis;
- (b) means for measuring the temperature of said heated crucible;
- (c) means for supporting a combustion flame near said heated crucible;
- (d) a source of carrier gas and a source of reactive gas;
- (e) conduit means for conducting said carrier gas and said reactive gas past said heated crucible, for reaction of said reactive gas with the vapor of said sample material to produce a reaction product for transport into said flame for analysis;
- (f) an optical detector disposed near said flame for detecting the optical emission from said flame;
- and
- (g) an optical filter disposed between said flame and said detector, said filter selected to pass wavelength bands characteristic of said sample material.
Dependencies are inferred from the claim text.