The Fokker-Planck operator as an asymptotic limit in anisotropic media.
Artikel i vetenskaplig tidskrift, 2002
We derive the Fokker-Planck operator describing
a highly forward peaked scattering process in the linear transport
equation, in anisotropic media, as a formal asymptotic limit of the
exact integral operator. The resulting operator, being both
convective and diffusive in angle and energy variables, reduces the
degenerate nature of the Fokker-Planck system compared to the
isotropic media case where the corresponding limit is only convective in
energy and diffusive in angle.
forward peaked scattering