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Article Dans Une Revue Science Advances Année : 2023

Direct visualization of the quantum vortex lattice structure, oscillations and destabilization in rotating 4He

Résumé

Quantum vortices are a core element of superfluid dynamics and elusively hold the keys to our understanding of energy dissipation in these systems. Here we show that we are able to visualize these vortices in the canonical and higher symmetry case of a stationary rotating superfluid bucket. Using direct visualization, we quantitatively verify Feynman’s rule linking the resulting quantum vortex density to the imposed rotational speed. We make the most of this stable configuration by applying an alternative heat flux aligned with the axis of rotation. Moderate amplitudes led to the observation of collective wave mode propagating along the vortices and high amplitudes led to quantum vortex interactions. When increasing the heat flux, this ensemble of regimes defines a path towards quantum turbulence in rotating 4He and sets a baseline to consolidate the descriptions of all quantum-fluids.
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Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale

Dates et versions

hal-03911293 , version 1 (22-12-2022)
hal-03911293 , version 2 (18-07-2023)

Identifiants

Citer

Charles Peretti, Jérémy Vessaire, Emeric Durozoy, Mathieu Gibert. Direct visualization of the quantum vortex lattice structure, oscillations and destabilization in rotating 4He. Science Advances , 2023, 9 (30), pp.2899. ⟨10.1126/sciadv.adh2899⟩. ⟨hal-03911293v2⟩

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