Bradley, D. Ian and Fisher, Shaun N. and Guénault, Anthony M. and Haley, Richard P. and Martin, Hazel and Pickett, George R. and Roberts, John Edward and Tsepelin, Viktor (2006) Thermal transport by ballistic quasiparticles in superfluid He-3-B in the low temperature limit. American Institute of Physics Conference Proceedings, 850. pp. 93-94. ISSN 0094-243XFull text not available from this repository.
In the temperature range below 0.2T(c), the gas of thermal excitations from the superfluid He-3-B ground state is in the ultra-dilute ballistic regime. Here we discuss preliminary measurements of the transport properties of this quasiparticle gas in a cell of cylindrical geometry with dimensions much smaller than any mean free path. The vertical cylinder, constructed from epoxy-coated paper, has vibrating wire resonator (VWR) heaters and thermometers at the top and bottom, and a small aperture at the top which provides the only exit for quasiparticles. Using the thermometer VWRs, we measure the difference in quasiparticle density between the top and bottom of the tube when we excite the top or bottom VWR heater. This gives information about the transport of energy along the cylindrical 3 He sample and hence about the scattering behaviour involved when a quasiparticle impinges on the cylinder wall.
|Journal or Publication Title:||American Institute of Physics Conference Proceedings|
|Uncontrolled Keywords:||superfluid ; helium-3 ; interface ; droplet|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||26 Jan 2009 09:09|
|Last Modified:||26 Jul 2012 16:10|
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