Radiative characteristics of fibers with a large size parameter

This study shows that the scattering intensity by a single fiber having a l arge size parameter and a large absorption index can be approximated by sup erimposition of the diffraction intensity by a rectangular aperture and the specular reflection intensity off the fiber surface. Using this approximat ion, the method for determining the radiative characteristics have been der ived. By extending this method, we have also derived the radiative characte ristics of fibers having a diffuse surface. Furthermore, we also use the re sultant radiative characteristics to estimate the radiative properties of m edia having randomly oriented fibers and radiation transfer in the media. ( C) 2000 Elsevier Science Ltd. All rights reserved.