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Coherent transmission of an ultrasonic shock wave through a multiple scattering medium.

作者信息

Viard Nicolas, Giammarinaro Bruno, Derode Arnaud, Barrière Christophe

机构信息

Institut Langevin-Ondes et Images, Université Denis Diderot Paris VII, ESPCI ParisTech, CNRS (UMR 7587), 1 rue Jussieu, 75005 Paris, France.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Aug;88(2):023201. doi: 10.1103/PhysRevE.88.023201. Epub 2013 Aug 2.

DOI:10.1103/PhysRevE.88.023201
PMID:24032956
Abstract

We report measurements of the transmitted coherent (ensemble-averaged) wave resulting from the interaction of an ultrasonic shock wave with a two-dimensional random medium. Despite multiple scattering, the coherent waveform clearly shows the steepening that is typical of nonlinear harmonic generation. This is taken advantage of to measure the elastic mean free path and group velocity over a broad frequency range (2-15 MHz) in only one experiment. Experimental results are found to be in good agreement with a linear theoretical model taking into account spatial correlations between scatterers. These results show that nonlinearity and multiple scattering are both present, yet uncoupled.

摘要

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引用本文的文献

1
Multiple scattering of an ultrasonic shock wave in bubbly media.超声冲击波在含气泡介质中的多次散射。
Eur Phys J E Soft Matter. 2018 Feb 8;41(2):18. doi: 10.1140/epje/i2018-11624-9.