Singularities of Diffuse Wave Fields in Scattering Media with Refractive Index Gradients

The subject of this paper is the radiative transfer in media with refractive index gradients. Asymptotic expressions of the intensity distributions in the vicinity of singular directions are derived. Critical conditions for the occurrence of singular intensity distributions in fields of scattered ra...

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Bibliographic Details
Published inMoscow University physics bulletin Vol. 79; no. 3; pp. 336 - 344
Main Author Ilyushin, Ya. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2024
Springer Nature B.V
Subjects
Acoustics
Asymptotic methods
Electronics
Mathematical and Computational Physics
Physics
Physics and Astronomy
Radiation sources
Radiative transfer
Radiophysics
Refractivity
Statistical models
Theoretical
refraction
radiative transfer
singularity
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Summary:The subject of this paper is the radiative transfer in media with refractive index gradients. Asymptotic expressions of the intensity distributions in the vicinity of singular directions are derived. Critical conditions for the occurrence of singular intensity distributions in fields of scattered radiation in a medium are formulated. It is shown that singular radiation fields in such media can be generated, among other things, by nonsingular configurations of radiation sources. The obtained results are verified by direct comparison with the results of numerical calculations using the Monte Carlo statistical modelling method.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134924700450