Vol. 18, issue 04, article # 3

pdf 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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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.