Lockerbie, N.A. and Chapelier, C. and Blanchard, J.J. (1991) Alignment system for 9-10 GHz longitudinal sound waves in a quartz etalon at 1.5 K. Review of Scientific Instruments, 62 (3). pp. 814-817. ISSN 0034-6748Full text not available in this repository. (Request a copy from the Strathclyde author)
We report the results of a system that employs four small superconducting repulsion coils and their respective niobium force-plates to restore the parallelism of a quartz-rod acoustic etalon, used for the measurement of acoustic transmission across quarter‐wave matching layers into liquid 4He. In the 9-10 GHz frequency range we find up to an eightfold improvement in the number of usable echoes for some quartz-rod samples.
|Keywords:||helium 4, quartz, sound waves, acoustic microscopy, wave propagation, solid−fluid interfaces, acoustic measurements, ghz range, Physics, Instrumentation|
|Subjects:||Science > Physics|
|Department:||Faculty of Science > Physics|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||11 May 2010 18:52|
|Last modified:||06 Jan 2017 07:19|