Calculation of Leggett-Takagi relaxation in vortices of superfluid 3He-B
  We calculate the relaxation of Brinkman-Smith mode via Leggett-Takagi relaxation in the presence of an isolated vortex in superfluid 3He-B. The calculation is based on an analytical solution of the order parameter far from the vortex axis. We obtain an expression for the dissipated power per vortex length as a function of the tipping angle of the magnetization and the orientation of the static magnetic field with respect to the vortex. 
S. M. Laine, E. V. Thuneberg
cond-mat.supr-con