Vol. 18, issue 04, article # 3

Ponomarev Yu.N., Bykov A.D., Savel'ev V.N. Measurements of molecular absorption line broadening and shift induced by collisions with selectively excited buffer gas molecules. 2. Estimated change in line shift . // Atmospheric and oceanic optics. 2005. V. 18. No. 04. P. 278-281.
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Abstract:

The influence of vibrational excitation of SF6 molecules on the shift of CH4 absorption lines in the СН4-SF6 binary system has been estimated. It is shown that if 10-30% of buffer gas molecules are excited, the change in the line shift can achieve 12%, which is detectable with the spectrometer resolution of 10-3 сm-1.

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