Volume 84, Number 4, November 2008
|Number of page(s)||4|
|Section||Atomic, Molecular and Optical Physics|
|Published online||10 November 2008|
Narrowing of Doppler spectral line shapes by correlated ion and electron temperature fluctuations
PIIM, UMR 6633 CNRS/Université de Provence, Centre de St-Jérôme - Case 232, 13397 Marseille Cedex 20, France, EU
2 Université Pierre et Marie Curie, UMR 7605, LULI - Case 128, 4 Place Jussieu, 75252 Paris, France, EU
3 Ecole Polytechnique, LULI, “Physique Atomique dans les Plasmas Denses” PAPD - 91128 Palaiseau Cedex, France, EU
Corresponding author: email@example.com
Accepted: 10 October 2008
The influence of low-frequency temperature fluctuations on Doppler line shapes is investigated. It is shown that the line profile can be strongly narrowed if the fluctuations of ion and electron temperatures are correlated. This result shows that the widely used model retaining only velocity fluctuations in the analysis of Doppler lines might lead to misleading conclusions about turbulence level.
PACS: 32.70.Jz – Line shapes, widths, and shifts / 52.35.Ra – Plasma turbulence
© EPLA, 2008
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