Two-cell spectrophone detects trace amounts of atmospheric pollutants by measuring absorption coefficients of gases with various laser sources. Device measures pressure difference between two tapered cells with differential manometer. Background signal is reduced by balanced window heating and balanced carrier gas absorption in two cells.
Differential-optoacoustic absorption detector
NASA Tech Briefs ; 1 , 4
01.03.1977
Sonstige
Keine Angabe
Englisch
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