Pure NH3 Spectrum Measurements and Analysis of Overlapping Absorption Lines in the 6611.6–6613.5 cm−1 Region.

Autor: Kapitanov, V. A., Ponurovskii, Ya. Ya., Osipov, K. Yu., Ponomarev, Yu. N.
Zdroj: Atmospheric & Oceanic Optics; Feb2023, Vol. 36 Issue 1, p7-13, 7p
Abstrakt: The results of experimental studies of absorption spectra of pure NH3 in the 6604.3–6606.3 and 6611.6–6613.5 cm−1 ranges at room temperature and pressures of up to 0.04 atm are presented. The measurements were carried out at the Department of Diode Laser Spectroscopy of A.M. Prokhorov Institute of General Physics, Russian Academy of Sciences, in a high-sensitivity high-resolution diode laser spectrometer with a signal-to-noise ratio of ∼1400. The spectra are analyzed with the use of a Voigt profile. Parameters of spectral absorption lines are retrieved, including the line centers, intensities, and coefficients of collisional self-broadening and shifts, and compared with the parameters from the HITRAN database. A twofold difference between the measured intensities of a number of lines and the HITRAN values is found. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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