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

Acoustic Impedance in High B/T

For highly attenuating materials, transmission measurement is difficult to use. We offer an acoustic impedance measurement capability which is valuable in detecting transition signatures.

Only one transducer is attached to an acoustic sample. Difference between excitation signal and received signal is detected by sensitive electronics.


  • MATEC 310 transmitter and 625 receiver
  • Homemade spectrometer. (Y. Lee’s group)

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Images & Sample Data

Credit: National MagLab

Related Publications

H. C. Choi, et al., A1 and A2 Transitions in Superfluid 3He in 98% Porosity Aerogel, Phys. Rev. Lett. 93, 145302 (2004). Read online.

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Last modified on 23 December 2022

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