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High Q value Quartz Tuning Fork in Vacuum as a Potential Thermometer in Millikelvin Temperature Range

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  1. Article

    Open Access

    Response of a Mechanical Oscillator in Solid 4He

    We present the first measurements of the response of a mechanical oscillator in solid 4He. We use a lithium niobate tuning fork operating in its fundamental resonance mode at a frequency of around 30 kHz. Measure...

    S. L. Ahlstrom, D. I. Bradley, M. Človečko… in Journal of Low Temperature Physics (2014)

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  2. Article

    Open Access

    Plastic Properties of Solid 4He Probed by a Moving Wire: Viscoelastic and Stochastic Behavior Under High Stress

    We present measurements of a thin wire moving through solid 4He. Measurements were made over a wide temperature range at pressures close to the melting curve. We describe the new experimental technique and presen...

    S. L. Ahlstrom, D. I. Bradley, M. Človečko… in Journal of Low Temperature Physics (2014)

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