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.
Explore our magnet schedule to see what exciting research is happening on our stellar fleet of instruments right now.
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.
Last modified on 23 December 2022