Abstract
An automatic pulse-echo ultrasonic interferometer for continuous measurements of sound velocity changes is described. Velocity resolution of about 1 ppm was obtained for a single transit echo. It is an improvement over results obtained by a previous unautomated version of the pulse-echo interferometer. A simultaneous detection of the amplitude of the measured echo is also possible in this system. Measurements of velocity and attenuation shifts of a surface acoustic wave propagating on an ST-cut quartz, while being copper deposited, are given.
| Original language | English |
|---|---|
| Pages (from-to) | 1386-1387 |
| Number of pages | 2 |
| Journal | Review of Scientific Instruments |
| Volume | 52 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1 Dec 1981 |
ASJC Scopus subject areas
- Instrumentation