Thermal Accommodation Coefficients by High Speed Vibration of Solid Samples. I. Method and Apparatus.

摘要

A method and apparatus to determine thermal accommodation coefficients are described in which solid samples are vibrated at high velocity in the presence of a test gas at low pressure. Energy transfer between the incident gas molecules and the moving surface causes an increase in the solid temperature which is related to, and approximately proportional directly to the thermal accommodation coefficient and inversely to the emissivity.