| Autor: |
Lockerbie, N. A., Chapelier, C., Blanchard, J. J. |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; Mar91, Vol. 62 Issue 3, p814, 4p |
| Abstrakt: |
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 [sup 4]He. 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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