Center of Acoustic Microscopy, N.M. Emanuel Institute of Biochemical Physics RAS, Kosygin Str. 4, Moscow 119334, Russia.
Ultrasonics. 2012 Jan;52(1):5-11. doi: 10.1016/j.ultras.2011.07.010. Epub 2011 Aug 16.
Oscillations of the Rayleigh wave statistical scattering in the Rayleigh limit are theoretically found. These oscillations are violation of the Rayleigh law of scattering. They are caused by the diffraction of a new form - the extraordinary scattering in the Rayleigh limit, which leads to the different frequency dependencies of the scattering coefficient and thus violates the Rayleigh law of scattering. The fundamental physical conception that a wave does not sense the structure of an irregularity in a long-wavelength scattering, when the wavelength is much greater than the character size of the irregularity, i.e. in the Rayleigh limit, is violated as well.
在瑞利极限下,理论上发现了瑞利波统计散射的波动。这些波动违反了瑞利散射定律。它们是由一种新形式的衍射引起的,即瑞利极限下的异常散射,这导致了散射系数的不同频率依赖性,从而违反了瑞利散射定律。当波长远大于不规则性的特征尺寸时,即处于瑞利极限下,波不会感觉到不规则性结构的基本物理概念也被违反了。