The differential cross section for the <i>Q</i>-branch vibrational transition in nitrogen has been determined by an experimental comparison of its magnitude with that of the cross section for the <i>l</i> → 3 rotational cross section in hydrogen. The frequency dependence of the nitrogen <i>Q</i> -branch vibrational transition has also been measured.
H. A. Hyatt, J. M. Cherlow, W. R. Fenner, and S. P. S. Porto, "Cross section for the Raman effect in molecular nitrogen gas," J. Opt. Soc. Am. 63, 1604-1606 (1973)