Vacuum properties of high quality value tuning fork in high magnetic field up to 8 Tesla and at mK temperatures
2014; IOP Publishing; Volume: 568; Issue: 3 Linguagem: Inglês
10.1088/1742-6596/568/3/032006
ISSN1742-6596
AutoresM. Človečko, Martin Kupka, P. Skyba, František Vavrek,
Tópico(s)Mechanical and Optical Resonators
ResumoTuning forks are very popular experimental tools widely applied in low and ultra low temperature physics as mechanical resonators and cantilevers in the study of quantum liquids, STM and AFM techniques, etc. As an added benefit, these forks being cooled, have very high Q-value, typically 106 and their properties seems to be magnetic field independent. We present preliminary vacuum measurements of a commercial tuning fork oscillating at frequency 32 kHz conducted in magnetic fields up to 8 T and at temperature ~ 10 mK. We found an additional weak damping of the tuning fork motion depending on magnetic field magnitude and we discuss physical nature of the observed phenomena.
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