研究目的
To analyze the spectroscopic information necessary to detect sources of high methane concentration in the atmosphere using CO and He – Ne lasers.
研究成果
The analysis demonstrates that in the HITRAN database there are regions of the methane spectrum where the data do not correspond to the actual values of the spectral line parameters observed in the experiment. It is necessary to analyze the used spectroscopic information thoroughly when choosing the working wavelengths of laser radiation to determine the methane concentration by the differential absorption method.
研究不足
The study highlights the ambiguity in the values of the centre frequencies and widths of the laser emission lines given in literature. It also points out the necessity to control the wavelength gradient of the transmission function in the presence of certain types of aerosol particles when using the differential absorption method.
