Absorption studies and minimum detectable concentration of ethylene by using a room-temperature HgCdTe detector.
The usefulness of a room-temperature HgCdTe detector in a simple air pollution detection system with a CO(2) laser has been investigated. The results show that the detector responsivity is flat in the frequency range 200-400 Hz and the minimum detectable concentration of ethylene is ~2 parts in 10(6)-meter (ppm-m). The estimated sensitivity is comparable with the values obtained by using liquid-nitrogencooled HgCdTe detectors.
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