Effect of Diffusion on Ultrasonic Attenuation in Mixtures of the Rare Gases

Publisher Website
Google Scholar
Abstract
The attenuation of 70-kHz sound in mixtures of helium and argon and of helium and krypton has been measured over a temperature range from 23° to 140°C and a pressure range from about 20 to 200 mm Hg. Kohler's theory of absorption due to diffusion in a mixture of two monatomic gases is found to account successfully for the measured excess absorption over that due to viscosity and thermal conductivity. Total absorption is found to increase slightly with temperature, a result that may be ascribed to the nonrigidity of the gas molecules. Generally good agreement is found with the previous room-temperature measurements of Petralia, Holmes and Tempest, and Stavseth.

This publication has 0 references indexed in Scilit: