Pressure dependence of peak position and shape of ν1 methane Raman band

D. V. Petrov; I. I. Matrosov; A. R. Zaripov; A. S. Tanichev; A. A. Kobzev

doi:10.1117/12.2575639

12 November 2020 Pressure dependence of peak position and shape of ν₁ methane Raman band

D. V. Petrov, I. I. Matrosov, A. R. Zaripov, A. S. Tanichev, A. A. Kobzev

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115600E (2020) https://doi.org/10.1117/12.2575639
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

This work is aimed to study of the ν₁ band of the methane Raman spectrum in the pressure range of 1–80 atm. The wavenumber calibration was performed using the rotational–vibrational structure of the ν3 methane band. It was established, that pressure shift coefficient is about –0.02 cm^–1 /atm, pressure broadening coefficient is about 0.005 cm^{– 1} /atm. According to the obtained experimental data, in the region of 2914–2916 cm^–1, with an increase in pressure, either the van der Waals methane complexes begin to make a noticeable contribution to the intensity of the ν1 band, or collision–induced Raman scattering increases in this range.

Citation Download Citation

D. V. Petrov, I. I. Matrosov, A. R. Zaripov, A. S. Tanichev, and A. A. Kobzev "Pressure dependence of peak position and shape of ν₁ methane Raman band", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115600E (12 November 2020); https://doi.org/10.1117/12.2575639

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