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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2010

Dynamic Stark broadening as the Dicke narrowing effect

Résumé

A very fast method to account for charged particle dynamics effects in calculations of spectral line shape emitted by plasmas is presented. This method is based on a formulation of the frequency fluctuation model ﰒFFMﰓ, which provides an expression of the dynamic line shape as a functional of the static distribution of frequencies. Thus, the main numerical work rests on the calculation of the quasistatic Stark profile. This method for taking into account ion dynamics allows a very fast and accurate calculation of Stark broadening of atomic hydrogen high-n series emission lines. It is not limited to hydrogen spectra. Results on helium-ﰟ and Lyman-ﰠlines emitted by argon in microballoon implosion experiment conditions compared with experimental data and simulation results are also presented. The present approach reduces the computer time by more than 2 orders of magnitude as compared with the original FFM with an improvement of the calculation precision, and it opens broad possibilities for its application in spectral line-shape codes.
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Dates et versions

hal-00584502 , version 1 (08-04-2011)

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  • HAL Id : hal-00584502 , version 1

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Annette Calisti, Caroline Mossé, Sandrine Ferri, Bernard Talin, Frank Rosmej, et al.. Dynamic Stark broadening as the Dicke narrowing effect. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2010, 81, pp.016406. ⟨hal-00584502⟩
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