title: Analytical Green's function of the radiative transfer radiance for the infinite medium.
abstract: An analytical solution of the radiative transfer equation for the radiance caused by an isotropic source which is located in an infinitely extended medium was derived using the P{N} method. The results were compared with Monte Carlo simulations and excellent agreement was found. In addition, the radiance of the SP{N} approximation for the same geometry was derived. Comparison with Monte Carlo simulations showed that the SP{N} radiance, although being more exact than the radiance derived from diffusion theory, has relatively large errors in many relevant cases.
authors.affiliation: Institut für Lasertechnologien in der Medizin und Meßtechnik, Helmholtzstrasse12, D-89081 Ulm, Germany.
authors.forename: André
authors.initials: A
authors.lastname: Liemert
authors.forename: Alwin
authors.initials: A
authors.lastname: Kienle
mesh_terms: D004058:Diffusion; D008962:Models, Theoretical; D009010:Monte Carlo Method; D055585:Physical Phenomena