ION TRANSPORT IN NORMAL LIQUID 4HE
Ions are used in normal liquid helium to investigate the hydrodynamics in presence of electrostriction. The Navier-Stokes equation must be modified in order to account for the spatial variations of density and viscosity around the ion because of the local pressure increase due to electrostriction. The solutions of the modified hydrodynamic equations are compared to experiments in normal liquid 4He. The issue matters if the liquid actually freezes around the ion. The analogies with the transport of the O2 - ion in dense Neon gas are described.
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