Exact solution of a problem in radiative transfer by the Laplace transform and the Wiener-Hopf technique when the incoming intensity at the surface is known

The author considers the problem of determination of the emergent intensity from the bounding face and the intensity at any optical depth within a plane-parallel semi-infinite atmosphere by the Laplace transform and the Wiener-Hopf technique if the incoming intensity at the boundary face of the atmosphere is known. The solution is exact. As a particular case, the solution of Das (1978) is obtained. (Auth.)