A Fringe‐Counting Pulsed Ultrasonic Interferometer
作者:
Peter L. M. Heydemann,
期刊:
Review of Scientific Instruments
(AIP Available online 1971)
卷期:
Volume 42,
issue 7
页码: 983-986
ISSN:0034-6748
年代: 1971
DOI:10.1063/1.1685319
出版商: AIP
数据来源: AIP
摘要:
A new ultrasonic interferometer for the automatic measurement of transit times is described. Its main advantage is its ability to follow very large changes of the transit time (1–20) and still maintain a resolution of typically 2.5×10−10sec. The method is based on the phase sensitive detection of multiple echoes, counting of the output signal at the rate of four counts per full cycle, and an additional interpolation.
点击下载:
PDF
(259KB)
返 回