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Lecoutre C, Guillaument R, Marre S, et al. Weightless experiments to probe universality of fluid critical behavior. Phys Rev E Stat Nonlin Soft Matter Phys. 2015;91(6):060101doi: 10.1103/PhysRevE.91.060101.
Lecoutre, C., Guillaument, R., Marre, S., Garrabos, Y., Beysens, D., & Hahn, I. (2015). Weightless experiments to probe universality of fluid critical behavior. Physical review. E, Statistical, nonlinear, and soft matter physics, 91(6), 060101. https://doi.org/10.1103/PhysRevE.91.060101
Lecoutre, C, et al. "Weightless experiments to probe universality of fluid critical behavior." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 91,6 (2015): 060101. doi: https://doi.org/10.1103/PhysRevE.91.060101
Lecoutre C, Guillaument R, Marre S, Garrabos Y, Beysens D, Hahn I. Weightless experiments to probe universality of fluid critical behavior. Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jun;91(6):060101. doi: 10.1103/PhysRevE.91.060101. Epub 2015 Jun 08. PMID: 26172640.
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Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jun;91(6):060101. doi: 10.1103/PhysRevE.91.060101. Epub 2015 Jun 08.

Weightless experiments to probe universality of fluid critical behavior.

Physical review. E, Statistical, nonlinear, and soft matter physics

C Lecoutre, R Guillaument, S Marre, Y Garrabos, D Beysens, I Hahn

Affiliations

  1. CNRS, ICMCB, ESEME, UPR 9048, F-33600 Pessac, France.
  2. Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France.
  3. Physique et Mécanique des Milieux Hétérogènes, UMR 7636 CNRS - ESPCI - Université Pierre et Marie Curie - Université Paris Diderot, 10 rue Vauquelin, 75005 Paris, France.
  4. Service des Basses Températures, CEA-Grenoble & Université Joseph Fourier, F-38000 Grenoble, France.
  5. Jet Propulsion Laboratory, California Institute of Technology, California 91109, USA.

PMID: 26172640 DOI: 10.1103/PhysRevE.91.060101

Abstract

Near the critical point of fluids, critical opalescence results in light attenuation, or turbidity increase, that can be used to probe the universality of critical behavior. Turbidity measurements in SF6 under weightlessness conditions on board the International Space Station are performed to appraise such behavior in terms of both temperature and density distances from the critical point. Data are obtained in a temperature range, far (1 K) from and extremely close (a few μK) to the phase transition, unattainable from previous experiments on Earth. Data are analyzed with renormalization-group matching classical-to-critical crossover models of the universal equation of state. It results that the data in the unexplored region, which is a minute deviant from the critical density value, still show adverse effects for testing the true asymptotic nature of the critical point phenomena.

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