Abstract
Rotational Raman cross sections of typical gases are one to two orders of magnitude larger than vibrational Raman cross sections, however, because the spacing of the rotational levels is very small (~1000 times less than the vibrational spacing), and because the manifold of rotational lines lies very near the much stronger Rayleigh line, most Raman measurements have focused on vibrational scattering.
© 1998 Optical Society of America
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