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The MagLab is funded by the National Science Foundation and the State of Florida.

Pulse-Echo Ultrasound in High B/T

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.


Compatible Magnets

  • MATEC 310 transmitter and 625 receiver
  • NMR Kit / Tekmag

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Images & Sample Data

Credit: National MagLab

Related Publications

H. Takeuchi, et al., Knudsen-to-Hydrodynamic Crossover in Liquid 3He in a High-Porosity Aerogel, Phys. Rev. Lett. (2012) Read online.

B. H. Moon, et al., Frequency-dependent ultrasound attenuation in superfluid 3He in aerogel, Phys. Rev. B (2010) Read online.

. H. Moon, et. al., Ultrasound attenuation and a P-B-T phase diagram of superfluid 3He in 98% aerogel, Phys. Rev. (2010) Read online.

H. C. Choi, et. al., Ultrasound Attenuation of Superfluid 3He in Aerogel, Phys. Rev. Lett. (2007) Read online.

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Last modified on 23 December 2022

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