Divertor plasma detachment

被引：161

作者：

Krasheninnikov, S. I. ^{[1
]}

Kukushkin, A. S. ^{[2
,3
]}

Pshenov, A. A. ^{[2
,3
]}

机构：

[1] Univ Calif San Diego, 9500 Gilman Dr, La Jolla, CA 92093 USA

[2] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[3] Kurchatov Inst, Moscow 123182, Russia

来源：

PHYSICS OF PLASMAS | 2016年 / 23卷 / 05期

关键词：

NULL POLOIDAL DIVERTOR; EDGE PLASMA; ATOMIC PROCESSES; FLOW REVERSAL; TOKAMAK; TRANSPORT; SOL; JET; RECOMBINATION; SIMULATION;

D O I：

10.1063/1.4948273

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：

Regime with the plasma detached from the divertor targets (detached divertor regime) is a natural continuation of the high recycling conditions to higher density and stronger impurity radiation loss. Both the theoretical considerations and experimental data show clearly that the increase of the impurity radiation loss and volumetric plasma recombination causes the rollover of the plasma flux to the target when the density increases, which is the manifestation of detachment. Plasma-neutral friction (neutral viscosity effects), although important for the sustainment of high density/pressure plasma upstream and providing the conditions for efficient recombination and power loss, is not directly involved in the reduction of the plasma flux to the targets. The stability of detachment is also discussed. Published by AIP Publishing.

引用

页数：16

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