Abstract. Ultrasonic resonator cells for liquid attenuation and sound velocity measurements down to 70 kHz are described. The resonators are provided with easy-to-obtain concavely shaped shaving mirrors as acoustic reflectors and separated piezoelectric devices for the coupling of the cell to the electronic set-up. The advantages of this construction are shown. The mode spectrum of the resonators is discussed and measurement and evaluation procedures, also considering higher-order satellite peaks, are presented. Possible sources of experimental errors are specified and examples of measurements are given to illustrate the favourable performance of the cell design.

Keywords: acoustic attenuation, sound velocity, ultrasonic spectrometry, chemical kinetics, acoustic resonator

Print publication: Issue 7 (July 2003)
Received 20 February 2003, accepted for publication 14 May 2003
Published 17 June 2003