BRILLOUIN-SCATTERING STUDIES OF SIMPLE LIQUIDS - O2, N2, CO, CH4

The technique of Brillouin scattering has been used to obtain new velocity and attenuation data for thermal sound waves in liquids O//2, N//2, CO, and CH//4. Measurements of Brillouin shift and linewidth were made along the liquid-vapor coexistence line in each case and, when combined with previously published results, comprise a reasonably complete set of data covering the saturated liquid ranges of all four cryogenic materials. Where possible, comparisons are made with corresponding ultrasonic data.