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The unified theory of line broadening and its impact limits as well as an `extended impact theory' are re-investigated with regard to their validity for partially overlapping lines. It is shown that the extended impact theory does not lead to an improved treatment of line coupling, but that it may be used as an interpolating formalism when line coupling is negligible. This is illustrated by numerical applications to the Stark-broadened fine-structure profile of Balmer-alpha.

Additional information

Authors: STEHLÉ C, DAMAp et URA812, Observatoire de Paris, Meudon (FR);FEAUTRIER N, DAMAp et URA812, Observatoire de Paris, Meudon (FR);VOSLAMBER D, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Article: Journal of Physics B: Atomic Molecular Physics, Vol. 22 (1989) pp. 3657-3680
Record Number: 199011150 / Last updated on: 1994-12-01
Original language: en
Available languages: en