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Brillouin scattering study of methanol at high pressure |
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| Authors: | Scott A. Lee A. Anderson S. M. Lindsay R. C. Hanson |
| Affiliation: | 1. Department of Physics &2. Astronomy , University of Toledo , Toledo , OH , 43606 , USA;3. Department of Physics , Arizona State University , Tempe , AZ , 85287 , USA;4. On leave from University of Waterloo , Waterloo, Ontario , N2L 3G1 , Canada;5. Department of Physics , Arizona State University , Tempe , AZ , 85287 , USA;6. Department of Physics , Arizona State University , Tempe , AZ , 85287 , USA |
| Abstract: | Abstract Brillouin scattering has been used to study methanol as a function of pressure up to 8.4 GPa. Our near-forward-scattering experiments yield the pressure dependence of the velocity of longitudinal acoustic (LA) phonons, while we determine the pressure dependence of the product of the index of refraction and the LA phonon velocity from our backscattering experiments. The pressure dependence of the LA phonon lifetimes is obtained from the linewidth of the measured Brillouin peaks. From our backscattering experiments we find that the normalized phonon attenuation is a decreasing function of pressure. |
| Keywords: | Brillouin scattering hydrogen bonding elastic properties |