Spectroanalytical system and method
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United States of America Patent
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Apr 9, 1996
Grant Date -
N/A
app pub date -
Mar 3, 1995
filing date -
Mar 3, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spectroanalytical system includes housing structure with vent structure open to the atmosphere; radiation dispersing apparatus in the housing structure for dispersing radiation into a spectrum for application to sensor apparatus; sample excitation apparatus for exciting sample material to be analyzed to spectroemissive levels for generating a beam of radiation for dispersion by the dispersing structure; a source of gas; structure for flowing gas from the source into the housing structure for exhaust from the housing structure through the vent structure at a flow rate that is less than one percent of the volume of the housing structure per hour; first control structure for maintaining the pressure of the gas in the housing structure at a constant (within about one millibar) pressure independent of atmospheric pressure; and second control structure for maintaining the temperature of the gas within the housing structure constant within about 0.1.degree. F. during system operation.
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