Absorption of sound in gases between 10 and 25 MHz: argon

Author

Bond, L.J. ; Chiang, C.-H. ; Fortunko, C.M. ; McColskey, J.D.

Author_Institution

Colorado Univ., Boulder, CO, USA

fYear

1991

fDate

8-11 Dec 1991

Firstpage

1069

Abstract

A measurement system has been developed to investigate the technology required for high-power gas-coupled ultrasonics and the phenomenology of finite-amplitude of ultrasonic waves in gases at high frequencies (>10 MHz) and pressures up to 10 MPa (100 bar). Results of measurements of compression wave absorption and velocity in argon between 10 and 25 MHz, with various combinations of pressure, temperature and power level are presented. For small-amplitude waves, the resulting data are in good agreement with those calculated using ideal gas equations and fundamental thermophysical gas constants. At higher power levels, nonlinear phenomena are observed

Keywords

argon; ultrasonic absorption; ultrasonic velocity; 10 MPa; 10 to 25 MHz; Ar; compression wave absorption; compression wave velocity; gases; high-power gas-coupled ultrasonics; nonlinear phenomena; power level; pressure; small-amplitude waves; sound absorption; temperature; Absorption; Argon; Frequency measurement; Gases; Nonlinear equations; Power measurement; Pressure measurement; Temperature; Ultrasonic variables measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1991. Proceedings., IEEE 1991

Conference_Location

Orlando, FL

Type

conf

DOI

10.1109/ULTSYM.1991.234279

Filename

234279