NOIRHOMME, Martial; CAZAUBIEL, Annette; FALCON, Eric; FISCHER, David; GARRABOS, Yves; LECOUTRE-CHABOT, Carole; MAWET, Sébastien; OPSOMER, Eric; PALENCIA, Fabien; PILLITTERI, Salvatore; VANDEWALLE, Nicolas

doi:10.1103/PhysRevLett.126.128002

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NOIRHOMME, Martial
Group for Research and Applications in Statistical Physics [GRASP]

CAZAUBIEL, Annette
Matière et Systèmes Complexes [MSC]

FALCON, Eric
Matière et Systèmes Complexes [MSC]

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Article de revue

Ce document a été publié dans

Physical Review Letters. 2021-03-26, vol. 126, n° 12, p. 128002

American Physical Society

Résumé en anglais

We study experimentally the dynamical behavior of few large tracer particles placed in a quasi-2D granular “gas” made of many small beads in a low-gravity environment. Multiple inelastic collisions transfer momentum from the uniaxially driven gas to the tracers whose velocity distributions are studied through particle tracking. Analyzing these distributions for an increasing system density reveals that translational energy equipartition is reached at the onset of the gas-liquid granular transition corresponding to the emergence of local clusters. The dynamics of a few tracer particles thus appears as a simple and accurate tool to detect this transition. A model is proposed for describing accurately the formation of local heterogeneities.< Réduire

DOI

http://dx.doi.org/10.1103/PhysRevLett.126.128002

Projet Européen

ESA Topical Team No. 4000103461

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026