Comments on particle and energy balance in the edge plasma of Alcator C-Mod

被引：102

作者：

Umansky, MV ^{[1
]}

Krasheninnikov, SI ^{[1
]}

LaBombard, B ^{[1
]}

Terry, JL ^{[1
]}

机构：

[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

来源：

PHYSICS OF PLASMAS | 1998年 / 5卷 / 09期

关键词：

D O I：

10.1063/1.873051

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：

Particle balance is examined in a large set of representative Alcator C-Mod [I. H. Hutchinson et nl., Phys. Plasmas 1, 1511 (1994)] diverted plasmas using measurements of neutral gas pressures and ionization source strengths in the main chamber, and parallel plasma flow into the divertor. It is inferred that plasma flow in the scrape-off layer (SOL) is dominated by transport to the main chamber walls rather than by flow into the divertor. It follows that (i) the effective diffusion coefficient for anomalous cross-field particle transport in the SOL must rapidly grow with distance from the magnetic separatrix to account for the measured density profiles, (ii) a significant fraction of the power from the core plasma can be convected rather than conducted into the SOL, and (iii) the neutral pressure at the outer midplane is governed more by cross-field plasma transport than by wall-plasma separation or divertor/limiter geometries. (C) 1998 American Institute of Physics. [S1070-664X(98)01709-1]

引用

页码：3373 / 3376

页数：4

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