The MagLab is funded by the National Science Foundation and the State of Florida.
The MagLab is funded by the National Science Foundation and the State of Florida.
Absolute attenuation and sound velocity can be measured through direct propagation of ultrasound pulses in a wide range of temperature and magnetic field from: 0.1mK to1K and up to 8T magnetic field.
Tone-burst RF pulses are applied to a transmitter transducer and a receiver transducer detects a subsequent signals traveled through the sample. For high attenuating material, we also offer an acoustic impedance measurement capability which is valuable in detecting transition signatures.
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Credit: National MagLab
H. Takeuchi, et al., Knudsen-to-Hydrodynamic Crossover in Liquid 3He in a High-Porosity Aerogel, Phys. Rev. Lett. (2012).
B. H. Moon, et al., Frequency-dependent ultrasound attenuation in superfluid 3He in aerogel, Phys. Rev. B(2010).
. H. Moon, et. al., Ultrasound attenuation and a P-B-T phase diagram of superfluid 3He in 98% aerogel, Phys. Rev. (2010).
H. C. Choi, et. al., Ultrasound Attenuation of Superfluid 3He in Aerogel, Phys. Rev. Lett. (2007).
Last modified on 12 March 2026
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