Transmission of acoustic waves in a random layered medium

Varouzhan Baluni, Jorge Willemsen

Research output: Contribution to journalArticle

83 Scopus citations

Abstract

The transmission of acoustic waves through a sequence of alternating layers with random thicknesses but otherwise fixed characteristics is studied by means of the transfer-matrix formalism of one-dimensional disordered chains. The law limNln(TN/N)-() of the exponential decay of the transmission coefficient TN as a function of the number (2N) of layers is determined in a weak- (strong-) disorder regime for an arbitrary (uniform) distribution of layer thicknesses. The localization constant () has a particularly simple form at extreme low and high frequencies. Namely (0)=const×2 with a slope given in terms of physical characteristics of the layers and ()=const defined by a transmission coefficient of a single interface. The predictions are tested by Monte Carlo simulations of a simple model with characteristics of certain rocks. For all frequencies beyond the weak-strong disorder turnover region discrepancies between theoretical and numerical results are merely a few percent.

Original languageEnglish (US)
Pages (from-to)3358-3363
Number of pages6
JournalPhysical Review A
Volume31
Issue number5
DOIs
StatePublished - Jan 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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