Transport of neutral particles in turbulent scrape-off layer plasmas

被引：36
|
作者：
Marandet, Y. [1 ]
Mekkaoui, A. [1 ]
Reiter, D. [2 ]
Boerner, P. [2 ]
Genesio, P. [1 ]
Catoire, F. [1 ]
Rosato, J. [1 ]
Capes, H. [1 ]
Godbert-Mouret, L. [1 ]
Koubiti, M. [1 ]
Stamm, R. [1 ]
机构：
[1] Univ Aix Marseille 1, PIIM, UMR 6633, CNRS,Ctr St Jerome, F-13397 Marseille 20, France
[2] Forschungszentrum Julich, IEF Plasmaphys, TEC Euratom Assoc, D-52425 Julich, Germany
来源：
NUCLEAR FUSION | 2011年 / 51卷 / 08期
关键词：
D O I：
10.1088/0029-5515/51/8/083035
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effect of turbulence on the transport of neutral species (atom, molecules) in plasmas is investigated. A stochastic model relying on a multivariate gamma distribution is introduced to describe turbulent fluctuations, and implemented in EIRENE. The effects of fluctuations on the neutral density and ionization source radial profiles are investigated. The role of temperature fluctuations is discussed in detail. Calculations with ITER scrape-off layer parameters are presented, and two distinct regimes with respect to the effects of temperature fluctuations are identified, depending on the far SOL mean temperature. Finally, the influence of fluctuations on impurity contamination is discussed.
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页数：9
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