Resonant scattering and Anderson localization of acoustic waves

C.A. CONDAT; T.R. KIRKPATRICK

PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS

The American Physical Society

Año: 1987 vol. 36 p. 6782 - 6793

0163-1829

The properties of an acoustical medium containing a random array of identical discrete scatterers are investigated in detail. The cases of hard scatterers, soft scatterers, and permeable scatterers are considered for two- and three-dimensional configurations. Curves describing the diffusion coefficient, the localization length, and the phase boundaries are presented and the results are related to the single-scattering properties. The consequences of a modification in the self-consistent theory cutoff are examined.  The onset of localization in three dimensions is shown to satisfy approximately the Ioffe-Regel condition.