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We present an experiment with nitrogen dioxide (NO2) detection with the use of cavity enhanced spectroscopy. The pulsed blue diode laser working at 414 nm as a light source was applied. The cavity was composed of two mirrrors with the reflectivity of R = 0.99992. The off-axis adjustment of the resonator was used. The absorbing gas concentration was determined by the measurement of the decay time of...
W artykule podano klasyfikację metod detekcji gazów, opisano metodę CRDS (ang. Cavity Ring-Down Spectroscopy) oraz eksperyment polegający na zastosowaniu metody CEAS (ang. Cavity Enhanced Absorption Spectroscopy) do wykrywania śladowych stężeń dwutlenku azotu (NO2). W badaniach stosowano półprzewodnikowy niebieski laser impulsowy firmy TopGan. Koncentrację NO2 określano na podstawie czasu zaniku natężenia...
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