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- W4233455338 abstract "A new version of a microwave spectrometer for the detection of gaseous pollutants and other atmospheric constituents is described. The spectrometer, which operates in the vicinity of 70 GHz, employs a Fabry-Perot resonator as a sample cell and uses superhetrodyne detection for high sensitivity. The spectrometer has been modified to incorporate a frequency doubler modulated at 30 MHz to permit operation with a single Gunn oscillator source. As a result, faster response time and somewhat greater sensitivity are obtained. The spectrometer is capable of detecting a minimum concentration of 1 ppM of SO/sub 2/ diluted in air with a 1 second time constant. For OCS diluted in air, the minimum detectable concentration is 800 ppB and with a 10 second time constant 300 ppB." @default.
- W4233455338 created "2022-05-12" @default.
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- W4233455338 date "1980-09-01" @default.
- W4233455338 modified "2023-09-28" @default.
- W4233455338 title "Sensitivity and response time improvements in millimeter-wave spectrometers" @default.
- W4233455338 doi "https://doi.org/10.2172/6603463" @default.
- W4233455338 hasPublicationYear "1980" @default.
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