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.

Instrumentation

  • Compatible Magnets

  • Available Equipment

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

Images & Sample Data

Click on images to view a larger version or to download.

View the embedded image gallery online at:
https://nationalmaglab.org/user-facilities/high-b-t-facility/high-b-t-measurement-techniques/acoustic-impedance#sigProIdf105d8ff9a

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.

Staff Contacts

Last modified on 14 October 2014
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