Scattering from two-phase random media
نویسنده
چکیده
منابع مشابه
Scattering-phase theorem: anomalous diffraction by forward-peaked scattering media
The scattering-phase theorem states that the values of scattering and reduced scattering coefficients of the bulk random media are proportional to the variance of the phase and the variance of the phase gradient, respectively, of the phase map of light passing through one thin slice of the medium. We report a new derivation of the scattering phase theorem and provide the correct form of the rel...
متن کاملScattering of elastic waves in media with a random distribution of fluid-filled cavities: theory and numerical modelling
S U M M A R Y The propagation of elastic waves is modelled in media with a random distribution of fluidfilled circular cavities, which display high physical impedance in contrast to background media. Theoretical attenuation expressions for media with circular cavities, which may be filled with any material (e.g. vacuum, fluid, elastic materials), are formulated using an ensemble treatment for f...
متن کاملDiagnosis of the phase function of random media from light reflectance
Light reflectance has been widely used to diagnose random media in both in situ and in vivo applications. The quantification of the phase function of the medium from reflectance measurements, however, remains elusive due to the lack of an explicit connection between the light reflectance profile and the phase function. Here we first present an analytical model for reflectance of scattered light...
متن کاملLaser probing of random weakly scattering media
An analysis of measurements of phase and amplitude scintillations imparted on a Gaussian laser beam probing a weakly scattering random medium is presented. The second-order statistics (correlation functions and spectral densities) of the detector fluctuations (for homodyne and heterodyne interferometers) are related to the corresponding stochastic properties of the scattering medium. In the pla...
متن کاملStructural length-scale sensitivities of reflectance measurements in continuous random media under the Born approximation.
Which range of structures contributes to light scattering in a continuous random media, such as biological tissue? In this Letter, we present a model to study the structural length-scale sensitivity of scattering in continuous random media under the Born approximation. The scattering coefficient μs, backscattering coefficient μb, anisotropy factor g, and reduced scattering coefficient μs* as we...
متن کامل