Abstract
The transport of photons through a slab of random medium is shown to deviate from the diffusion approximation when z/ is small, where z is the thickness of the slab and is the transport mean free path. When z/=10 and z=10 mm, the average time of arrival is about 0.9 times that predicted by diffusion theory. Photons are found to arrive earlier than that predicted by the diffusion theory as z/ becomes smaller or the anisotropic scattering increases.
- Received 29 January 1990
DOI:https://doi.org/10.1103/PhysRevLett.64.2647
©1990 American Physical Society