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Asymmetry of Stark profiles |
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| Authors: | C Stehlé D Gilles AV Demura |
| Institution: | (1) DASGAL (UMR 8633 du CNRS), Observatoire de Paris, 5 place J. Janssen, 92195 Meudon, France, FR;(2) CEA, Ile-de-France, B.P. 12, 91680 Bruyères le Chatel Cedex, France, FR;(3) Hydrogen Energy and Plasma Technology Institute, Russian Research Center Kurchatov Institute, Moscow 123182, Russia, RU |
| Abstract: | The theoretical basis is presented that allows to compute the Stark broadened line shapes of atomic ions up to the quadrupole terms in the interaction potential between the radiator and the plasma electric microfields and their gradients. The nature of the corrections due to the plasma polarization effects associated with the electron distribution around ion perturbers are carefully analyzed. The relevant universal plasma functions are evaluated in a cluster expansion or by Monte Carlo simulations, and the line shape is calculated with ion dynamic effects by the Model Microfield Method. The asymmetry of the Lyman line of hydrogenic ions is then studied. Received 21 January 2000 and Received in final form 27 April 2000 |
| Keywords: | PACS 32 70 Jz Line shapes widths and shifts – 95 30 -k Fundamental aspect of astrophysics - 95 30 Dr Atomic processes and interactions |
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