Dissipation in the Flow of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math>-<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>A</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math>-<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi></math> through a Narrow Rectangular Channel

A. J. Dahm; D. S. Betts; D. F. Brewer; J. Hutchins; J. Saunders; W. S. Truscott

doi:10.1103/PhysRevLett.45.1411

Dissipation in the Flow of ${}^{3}{He}$ - $A$ and ${}^{3}{He}$ - $B$ through a Narrow Rectangular Channel

A. J. Dahm, D. S. Betts, D. F. Brewer, J. Hutchins, J. Saunders, and W. S. Truscott

Phys. Rev. Lett. 45, 1411 – Published 27 October 1980

Abstract

Measurements are reported which relate to the dissipation and superfluid density of ${}^{3}{He}$ - $A$ and ${}^{3}{He}$ - $B$ flowing through a long rectangular channel of cross section 48 μm × 2.86 mm at currents between 5 × $10^{- 2}$ g ${cm}^{- 2}$ $\sec^{- 1}$ and 5 × $10^{- 5}$ g ${cm}^{- 2}$ $\sec^{- 1}$ and at temperatures down to $\frac{T}{T_{c}} = 0.52$ . The results show a complex velocity dependence in both phases.

Received 7 May 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1411

Authors & Affiliations

A. J. Dahm^*, D. S. Betts, D. F. Brewer, J. Hutchins, J. Saunders^†, and W. S. Truscott

Physics Laboratory, University of Sussex, Brighton BN1 9QH, United Kingdom

^*Permanent address: Physics Department, Case Western Reserve University, Cleveland, Ohio 44106.
^†Present address: Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, N. Y. 14853.