Nuclear Science and Engineering / Volume 152 / Number 3 / March 2006 / Pages 284-291
Technical Paper / dx.doi.org/10.13182/NSE06-A2582
The exact solution to the diffusion equation for thermal neutrons emitted into an infinite medium containing absorbing and scattering plates is obtained. A fully explicit analytical representation is found through the solution of the resulting recurrence relation for the interfacial fluxes. Departure from Galanin's theory, which assumes infinitesimally thin absorbing plates, is demonstrated with increasing absorber thickness and decreasing diffusion coefficient.