Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.M. and Lowe, M. R. and Pickett, George R. and Rahm, A. (2001) Preliminary measurements of Andreev reflection of quasiparticles by turbulence in superfluid He-3. Journal of Low Temperature Physics, 124 (1-2). pp. 113-122. ISSN 0022-2291Full text not available from this repository.
We present preliminary measurements of Andreev scattering of quasiparticles from turbulence in the B-phase of superfluid He-3-B. The turbulence is generated by a vibrating wire resonator driven above its pair-breaking critical velocity. The vortices intercept a beam of quasiparticles generated by a nearby black-body radiator. A substantial fraction of the incident quasiparticles are retro-reflected back into the radiator by Andreev scattering processes. The resulting temperature rise within the radiator provides a direct measurement of the flux of quasiparticles Andreev reflected. The technique provides a sensitive probe of superfluid turbulence in the ultra-low temperature regime.
|Journal or Publication Title:||Journal of Low Temperature Physics|
|Uncontrolled Keywords:||helium-3 ; superfluid ; turbulence|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||03 Feb 2009 16:50|
|Last Modified:||07 Jan 2015 13:47|
Actions (login required)