Abstract
Rayleigh-Brillouin spectra of gaseous is measured for light scattered at 15° over a pressure range from 1 to 661 Torr. Spectral profiles are analyzed by means of an appropriate kinetic model. A least- method determines the optimum values of the theory parameters: total collision frequency and rotational relaxation number. These parameters are compared with values obtained by other methods. Information provided by light-scattering measurements concerning rotational relaxation in dilute systems is discussed.
- Received 11 August 1975
DOI:https://doi.org/10.1103/PhysRevA.13.752
©1976 American Physical Society