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Journal Articles Journal of Quantitative Spectroscopy and Radiative Transfer Year : 2007

Fast multilevel radiative transfer


The vast majority of recent advances in the field of numerical radiative transfer relies on approximate operator methods better known in astrophysics as Accelerated Lambda-Iteration (ALI). A superior class of iterative schemes, in term of rates of convergence, such as Gauss-Seidel and Successive Overrelaxation methods were therefore quite naturally introduced in the field of radiative transfer by Trujillo Bueno & Fabiani Bendicho (1995); it was thoroughly described for the non-LTE two-level atom case. We describe hereafter in details how such methods can be generalized when dealing with non-LTE unpolarised radiation transfer with multilevel atomic models, in monodimensional geometry.

Dates and versions

hal-00087890 , version 1 (27-07-2006)



F. Paletou, L. Léger. Fast multilevel radiative transfer. Journal of Quantitative Spectroscopy and Radiative Transfer, 2007, 103, pp.57-66. ⟨10.1016/j.jqsrt.2006.07.003⟩. ⟨hal-00087890⟩
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