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Scattering and absorption of turbid materials determined from reflection measurements. 1: theory.
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Comparison of the results indicates the range of values of the scattering and absorption parameters where the computationally fast diffusion approach is applicable.Abstract:
To allow the determination of scattering and absorption parameters of a turbid material from reflection measurements the relation of these parameters to the reflection has been described by two theoretical approaches. One approach is based on the diffusion theory which has been extended to include anisotropic scattering. This results in a reflection formula in which the scattering and absorption are described by one parameter each. As a second more general approach a Monte Carlo model is applied. Comparison of the results indicates the range of values of the scattering and absorption parameters where the computationally fast diffusion approach is applicable.read more
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References
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Multiple scattering in reflection nebulae. I - A Monte Carlo approach. II - Uniform plane-parallel nebulae with foreground stars. III - Nebulae with embedded illuminating stars
TL;DR: In this paper, a method for calculating the surface brightness distribution on a plane-parallel reflection nebula of uniform density illuminated by a star located either in front of, behind, or arbitrarily inside the scattering medium is proposed.
Journal ArticleDOI
Diffusion of a pulse in densely distributed scatterers
TL;DR: In this article, the propagation and scattering characteristics of a short optical pulse in a dense distribution of scatterers were studied, and the integral and differential equations for the two-frequency mutual coherence function under the first-order smoothing approximation were obtained.
Journal ArticleDOI
Scattering and absorption of turbid materials determined from reflection measurements. 2: measuring method and calibration.
TL;DR: This paper describes the measuring system and indicates the area of application of the method, based on reflection measurements carried out on bulk material, which will be of great advantage in many applications.