Order parameter and frictional effects on the transport conditions of Gorter-Mellink counterflow

Evidence for the existence of quantized vortex lines in He II from ion diagnostics probing micro-properties has raised related questions in the area of macro-phenomena (e.g. Gorter-Mellink (GM) transport). Examples are the possible influence of vortex lines on order parameter and liquid density, further, vortex bundle interaction (in eddies of bulk liquid) with shear viscosity dominated liquid domains at confining walls. Continuing a previous search for density effects attention is focussed on one particular question: Is it possible to express the flow response in terms of the order parameter and shear viscosity etasub(n) of the normal fluid. Continuum similarity concepts are considered and new counterflow data (zero net mass flow) obtained with the previous apparatus are reported. (Auth.)