Photoacoustic spectroscopy on gases with high pressure continuously tunable CO2 laser
نویسندگان
چکیده
We present a novel photoacoustic detection system with a high pressure C02 laser as radiation source. The laser is continuously tunable across wavelength ranges from 13 cm-I to 18 cm-1 wide. The narrow bandwidth of 0.017 cm-1 allows to resolve any fine structure in the absorption spectra of trace gases at atmospheric pressure. The absorption spectra of four gases are reported, demonstrating the great potential improvement in detection selectivity.
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