Dust-particle transport in tokamak edge plasmas

被引：131

作者：

Pigarov, AY ^{[1
]}

Krasheninnikov, SI

Soboleva, TK

Rognlien, TD

机构：

[1] Univ Calif San Diego, La Jolla, CA 92093 USA

[2] Univ Nacl Autonoma Mexico, Mexico City 04510, DF, Mexico

[3] Lawrence Livermore Natl Lab, Livermore, CA 95440 USA

来源：

PHYSICS OF PLASMAS | 2005年 / 12卷 / 12期

关键词：

D O I：

10.1063/1.2145157

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：

Dust particulates in the size range of 10 nm-100 mu m are found in all fusion devices. Such dust can be generated during tokamak operation due to strong plasma/material-surface interactions. Some recent experiments and theoretical estimates indicate that dust particles can provide an important source of impurities in the tokamak plasma. Moreover, dust can be a serious threat to the safety of next-step fusion devices. In this paper, recent experimental observations on dust in fusion devices are reviewed. A physical model for dust transport simulation and a newly developed code DUSTT are discussed. The DUSTT code incorporates both dust dynamics due to comprehensive dust-plasma interactions as well as the effects of dust heating, charging, and evaporation. The code tracks test dust particles in realistic plasma backgrounds as provided by edge-plasma transport codes. The results are presented for dust transport in current and next-step tokamaks. The effect of dust on divertor plasma profiles and core plasma contamination is examined. (c) 2005 American Institute of Physics.

引用

页码：1 / 15

页数：15

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