Hydrodynamic decay of decorated quantum vortex rings

The decay of quantum vortex rings in counterflow regimes, visualized Helium II with the help solid hydrogen particles trapped to their cores, has been a puzzling issue within usual description superfluid dynamics, grounded on hypothesis that filament is, effectively, an extended massless object subject canceling superposition Magnus and mutual friction forces. We discuss, from general energy-budget point view, phenomenological solution this problem, which relies viscous dissipation mechanisms, later associated backreaction singular structures surrounding two-component fluid mixture.