Incoherent backscattering of acoustic waves from surfaces with randomly distributed oscillators

被引：5
|
作者：
Tutov, AV [1 ]
Mayer, AP
Maradudin, AA
机构：
[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[3] Univ Calif Irvine, Inst Surface & Interface Sci, Irvine, CA 92697 USA
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.71.075422
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A theoretical study is presented of the reflection of acoustic waves from a surface of a semi-infinite elastic medium covered by a random distribution of resonating structures. The latter are modeled by single oscillators coupled to the displacement field at the surface of the elastic medium. The incoherent part of the differential reflection coefficient of this system has been calculated using the coherent potential approximation that has been extended to account for effects of weak localization. When certain resonance conditions are satisfied, a strong enhancement of the backscattering peak has been found in the incoherent scattering of acoustic waves.
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页数：9
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