Inelastic scattering of xenon atoms by quantized vortices in superfluids

Abstract

We study inelastic interactions of particles with quantized vortices in superfluids by using a semi-classical 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.

References in corpus (10)

• Structural and dynamical properties of superfluid helium: a density functional approach
• Spectrum of turbulent Kelvin-waves cascade in superfluid helium
• Dissipative dynamics of superfluid vortices at non-zero temperatures
• Excimers He2* as Tracers of Quantum Turbulence in 4He in the T=0 Limit
• Pinning of quantized vortices in helium drop by dopant atoms and molecules
• Vortex arrays in nanoscopic superfluid helium droplets
• Probing vortices in 4He nanodroplets
• Interactions of vortices with rarefaction solitary waves in a Bose-Einstein condensate and their role in the decay of superfluid turbulence
• Vortex arrays in a rotating superfluid He-4 nanocylinder
• Vortex Splitting in Subcritical Nonlinear Schrodinger Equation

Cited by in corpus (5)

• Density Functional Theory of doped superfluid liquid helium and nanodroplets
• Edge-plasmon assisted electro-optical modulator
• Static and dynamic properties of heavily doped quantum vortices
• Dynamics of vortex-antivortex pairs and rarefaction pulses in liquid light
• Pair interactions of heavy vortices in quantum fluids