Absorption Spectrum of Pure H2S in the 6227.506–6236.844 and 6244.188–6245.348 cm−1 Ranges: Absorption Line Positions and Intensities, Self-Broadening and Self-Shift Coefficients.

Autor: Kapitanov, V. A., Ponurovskii, Ya. Ya.
Zdroj: Atmospheric & Oceanic Optics; Apr2024, Vol. 37 Issue 2, p151-161, 11p
Abstrakt: The absorption spectrum of the H2S molecule is recorded with high spectral resolution (0.00016 cm−1) and threshold sensitivity (∼1E-26 cm/molec.) in the 6227.506–6236.844 and 6244.188–6245.348 cm−1 spectral ranges at room temperature and pressures of 0.001–0.06 atm for the first time. The measurements were performed at the General Physics Institute, Russian Academy of Sciences, at a high-sensitivity high-resolution diode laser spectrometer with a signal-to-noise ratio of more than 10 000. Line center shift coefficients Δ0/P and collisional widths Γ2/P are estimated for the first time; new spectral lines have been recorded. The experimentally estimated line centers differ from the calculated positions of line centers in the HITRAN database by Δν = (νH − νexp) × 103 cm−1 ≈ 0.001–0.01 cm−1. The intensity estimates coincide much worse, the relative differences 100% × (SH − Sexp)/SH amount to tens of percent; the intensities of five lines differ by hundreds of percent or more. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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