Study (301)-(000) D_2O band in 10200 - 10450 cm~(-1) spectral region

摘要

Measurements of D2O absorption spectra in the visible spectral region near 0.98 μm are performed using FT-spectrometer IFS-125M and Light-emitting diode (LED) as source of radiation. Water vapor spectrum has been obtained by averaging over 17136 scans recorded at 24 m optical path length, temperature 24 C and pressure of sample 27 mBar. Due to strong emission of LED source it was possible to achieve signal-to-noise ratio about 10~4 and to record weak lines with intensities of 6 10~(-27) cm/molecule. Comparisons with results of early works are made.