THE METHOD OF ADDITION OF LAYERS FOR NONLINEAR RADIATIVE-TRANSFER PROBLEMS - PRACTICAL APPLICATIONS

We show how to carry out a practical application of the method of addi tion of layers for solving non-linear problems in radiative transfer. We first give the formulae allowing to initialize the procedure and th en explain how to build an entire medium by a successive addition proc ess. We also present the details of the iterative scheme required by t he non-linear character of the problem. We finally compute an illustra tive test example on a 5-level hydrogen atom with 10 frequencies and e xamine the convergence properties of the solution.