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We study inelastic interactions of particles with quantized vortices insuperfluids by using a semi-classical matter wave theory that is analogous tothe Landau two-fluid equations, but allows for the vortex dynamics. Theresearch is motivated by recent experiments on xenon doped helium nanodropletsthat show clustering of the impurities along the vortex cores. We numericallysimulate the dynamics of trapping and interactions of xenon atoms by quantizedvortices in superfluid helium and the obtained results can be extended toscattering of other impurities by quantized vortices. Different energies andimpact parameters of incident particles are considered. We show that inelasticscattering is closely linked to the generation of Kelvin waves along aquantized vortex during the interaction even if there is no capture. Thecapture criterion of an impurity is formulated in terms of the binding energy.

Inelastic scattering of xenon atoms by quantized vortices in superfluids