Turbulence and line shape formation in plasmas |
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| Authors: | Y Marandet J Rosato H Capes L Godbert-Mouret M Koubiti A Mekkaoui FB Rosmej R Stamm |
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| Institution: | 1. PIIM, UMR 6633, Université de Provence/CNRS, Centre de St Jérôrme, FR-13397 Marseille Cedex 20, France;2. Université Pierre et Marie Curie, LULI, UMR 7605, case 128, 4 place Jussieu, 72252 Paris Cedex 05, France;3. Laboratoire pour l''Utilisation des Lasers Intenses, PAPD, 91228 Palaiseau, France |
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| Abstract: | We investigate the role of turbulent fluctuations on line shape formation in optically thin plasmas. A general expression, valid if the turbulent scales are much larger than the atomic scales, is obtained for the profile measured using a passive spectroscopy set up. Well-known limiting cases for Doppler and Stark broadening are identified. Then, the role of temperature fluctuations on Doppler line shapes, and the effect of density fluctuations on Stark broadened lines in the quasi-static regime are investigated. |
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