The Equivalence of " Forward " and " Backward " Nonclassical Particle Transport Theories
In this paper, two distinct "nonclassical" particle transport theories in which the distribution function P(s) for the distance s between collisions is not exponential are discussed. The two nonclassical theories were developed to describe different physical problems, and the mathematical transport equations that arise from the two theories are different. Nonetheless, we show in this paper that by means of a physicallymotivated transformation, it is possible to derive one of the theories from the other. Our analysis also includes boundary conditions for finite media; previous publications on nonclassical transport have usually only considered infinite media.