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Inelastic scattering of xenon atoms by quantized vortices in superfluids

Accepted version
Peer-reviewed

Type

Article

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Authors

Pshenichnyuk, IA 
Berloff, NG 

Abstract

We study inelastic interactions of particles with quantized vortices in superfluids by using a semiclassical matter wave theory that is analogous to the Landau two-fluid equations, but allows for the vortex dynamics. The research is motivated by recent experiments on xenon-doped helium nanodroplets that show clustering of the impurities along the vortex cores. We numerically simulate the dynamics of trapping and interactions of xenon atoms by quantized vortices in superfluid helium and the obtained results can be extended to scattering of other impurities by quantized vortices. Different energies and impact parameters of incident particles are considered. We show that inelastic scattering is closely linked to the generation of Kelvin waves along a quantized vortex during the interaction even if there is no capture. The capture criterion of an impurity is formulated in terms of the binding energy.

Description

Keywords

cond-mat.other, cond-mat.other, cond-mat.quant-gas, physics.atom-ph

Journal Title

Physical Review B

Conference Name

Journal ISSN

2469-9950
2469-9969

Volume Title

94

Publisher

American Physical Society
Sponsorship
The financial support from the Skoltech-MIT Next Generation Program is gratefully acknowledged.