Vibrational-resonance self-broadening of IR absorption bands in gaseous fluorides

Andrei P. Burtsev; Ivan M. Kislyakov; Tatyana D. Kolomiitsova

doi:10.1117/12.375385

25 January 2000 Vibrational-resonance self-broadening of IR absorption bands in gaseous fluorides

Andrei P. Burtsev, Ivan M. Kislyakov, Tatyana D. Kolomiitsova

Proceedings Volume 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy; (2000) https://doi.org/10.1117/12.375385
Event: 13th Symposium and School on High-Resolution Molecular Spectroscopy, 1999, Tomsk, Russian Federation

Abstract

A new spectroscopic effect of strong self-action was observed for the first time in molecular gases for vibrational transitions to combined states, in which the strongly IR active v₃ mode is involved. Transformations of the v₃, v₁ + v₃, v₂ + v₄ band shapes of ³²SF₆, ³⁴SF₆, ¹²CF₄, ¹³CF₄, ¹⁴NF₃ upon variation of density (T equals 293 K) were studied for pure gas (p < 70 Amagat) and its dilute mixtures with Ar, Kr, Xe (p_mixt < 150 Amagat). A strong linear dependence of the second spectral moment M₂ on density for v₃ and v₁ + v₃ bands in pure gases was observed, whereas no effect was found in dilute mixtures and for v₂ + v₄ band in pure gases.

Citation Download Citation

Andrei P. Burtsev, Ivan M. Kislyakov, and Tatyana D. Kolomiitsova "Vibrational-resonance self-broadening of IR absorption bands in gaseous fluorides", Proc. SPIE 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy, (25 January 2000); https://doi.org/10.1117/12.375385

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