6533b823fe1ef96bd127fb4f

RESEARCH PRODUCT

Nonlinear Kelvin waves on a quantized vortex line in superfluid helium

Tommaso BrugarinoMaria Stella Mongiovi'Michele Sciacca

subject

Kelvin waves vortex filament superfluid helium eulerian fluid.Settore MAT/07 - Fisica Matematica

description

In this paper we show an exact solution (Kelvin wave) of an approximated dynamical equation for a quantized vortex line in helium superfluid at finite temperature. It is shown that the applied heat flux interacts with the vortex line, and the amplitude of the Kelvin wave can grow (the so-called Donnelly instability) or decrease according with the mutual direction between heat flux and wave vector.

yearjournalcountryeditionlanguage
2013-01-01
http://hdl.handle.net/10447/100273