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APS » Journals » Phys. Rev. Lett. » Volume 79 » Issue 19
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Phys. Rev. Lett. 79, 3637–3639 (1997)

Time-Dependent Coherent Backscattering of Acoustic Waves

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Arnaud Tourin1, Arnaud Derode1, Philippe Roux1, Bart A. van Tiggelen2, and Mathias Fink1
1Laboratoire Ondes et Acoustique, URA CNRS 1503, Université Paris VII Denis Diderot, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, 10 Rue Vauquelin, 75005 Paris, France
2Laboratoire de Physique et Modélisation des Systemes Complexes/CNRS, Universite Joseph Fourier, Maison des Magistères, B.P. 166, 38042 Grenoble Cedex 9, France

Received 5 June 1997; published in the issue dated 10 November 1997

We report the first measurements of dynamic transport properties of an acoustic pulsed wave propagating in a strongly disordered 2D medium by means of time-dependent coherent backscattering. The coherent backscattering peaks are recorded using an array of transducers. Both transport speed and diffusion coefficient have been determined accurately by comparison to a real-space generalization of coherent backscattering in optics.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.3637
DOI:
10.1103/PhysRevLett.79.3637
PACS:
43.20.+g, 43.90.+v
 
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