Abstract
In this paper we report measurements of the damping of a vibrating wire in spin polarized liquid helium mixtures. The dilute helium solutions have been cooled by nuclear demagnetisation in high magnetic fields such that the spin polarization for a 0.04% mixture is as high 75%. A PtW alloy vibrating wire has been used to probe the viscosity of the liquid. The increase in viscosity on changing the magnetic field from 3 tesla to 11.5 tesla is a factor 3.5 at the lowest temperatures. The results are compared to theory allowing for both s-wave and p-wave scattering.
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Owers-Bradley, J.R., Bowley, R.M., Naish, J.H. et al. Damping of a Vibrating Wire in Spin Polarized Liquid 3He-4He Mixtures. Journal of Low Temperature Physics 110, 321–326 (1998). https://doi.org/10.1023/A:1022536800798
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DOI: https://doi.org/10.1023/A:1022536800798