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Contribution à l'étude cinétique de l'interaction entre un plasma et une paroi : applications à la mesure de la température des ions par sondes ou par fluorescence induite par laser

Abstract : The plasma-wall interaction is studied by means of a kinetic model based on the Vlasov-Poisson equations. This model is particularly relevant to low pressure plasmas, such as those used in fusion or surface etching. With the help of analytical and numerical computations, we model the perturbations induced by a solid surface on a plasma in order to improve the ion temperature measurements. Firstly, we show how to significantly correct the measurements from probes by taking into account their own interaction with the plasma. Secondly, we point out the overestimation of the measurements from laser induced fluorescence when the spatial resolution is too low (which is usually the case in the vicinity of a surface). So as to remedy this problem without changing the apparatus, we give a method to achieve a deconvolution of the spectroscopic measurements.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_2002_0254_VALSAQUE.pdf
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https://hal.univ-lorraine.fr/tel-01747019
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 10:49:36 AM
Last modification on : Wednesday, March 24, 2021 - 10:22:02 AM

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  • HAL Id : tel-01747019, version 1

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Fabrice Valsaque. Contribution à l'étude cinétique de l'interaction entre un plasma et une paroi : applications à la mesure de la température des ions par sondes ou par fluorescence induite par laser. Autre [cond-mat.other]. Université Henri Poincaré - Nancy 1, 2002. Français. ⟨NNT : 2002NAN10254⟩. ⟨tel-01747019⟩

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