Broadening and shifting of the Raman Q branch in pure D₂ and D₂–He mixtures, I: experimental results and comparison with theory

1 November 1994

journal article
Published by Canadian Science Publishing in Canadian Journal of Physics

Vol. 72 (11-12) , 885-890
https://doi.org/10.1139/p94-116

Abstract

We report the broadening and shifting of the Raman Q-branch lines in D₂ and D₂–He mixtures, all at 305.2 K. The width and shift of each line were extracted by fitting a simple Lorentzian profile to the experimental data. From a linear fit of the widths and shifts as a function of density we have determined broadening and shifting coefficients with an uncertainty of ±0.5%. None of the existing semiclassical or quantal calculations agree with the measurements at this level of accuracy. It is pointed out that the removal of certain approximations in the calculations should bring theory and experiment into closer agreement.

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Broadening and shifting of the Raman Q branch in pure D2 and D2–He mixtures, I: experimental results and comparison with theory

Abstract

Keywords

Broadening and shifting of the Raman Q branch in pure D₂ and D₂–He mixtures, I: experimental results and comparison with theory