Journal of Low Temperature Physics

, Volume 138, Issue 1–2, pp 123–128

The Thermal Damping of an Aerogel Resonator in Superfluid 3He-B at Ultra Low Temperatures

  • D. I. Bradley
  • S. N. Fisher
  • A. M. Guénault
  • C. J. Matthews
  • P. Skyba
  • G. R. Pickett
  • K. L. Zaki
Article

DOI: 10.1007/s10909-005-1537-3

Cite this article as:
Bradley, D., Fisher, S., Guénault, A. et al. J Low Temp Phys (2005) 138: 123. doi:10.1007/s10909-005-1537-3
  • 52 Downloads

No Heading

We present measurements of the thermal damping of a cylindrical aerogel sample oscillating in superfluid. 3He-B in the low temperature regime. The measurements are made at low pressures where the 3He confined in the aerogel is normal. As in the case of conventional vibrating wire resonators, the thermal damping arises from quasiparticle collisions at the wire surface and is enhanced by many orders of magnitude by Andreev scattering from the superfluid backflow around the resonator. However, in the case of aerogel, incoming quasiparticles must be absorbed and thermalised within the aerogel before being re-emilled.

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • D. I. Bradley
    • 1
  • S. N. Fisher
    • 1
  • A. M. Guénault
    • 1
  • C. J. Matthews
    • 1
  • P. Skyba
    • 2
  • G. R. Pickett
    • 1
  • K. L. Zaki
    • 1
  1. 1.Department of PhysicsLancaster UniversityLancasterUK
  2. 2.Institute of Experimental PhysicsSlovak Academy of SciencesKošsiceSlovakia

Personalised recommendations