Structure of MARFEs and ELMs in NSTX

被引：13

作者：

Maqueda, R. J.

Maingi, R.

Tritz, K.

Lee, K. C.

Bush, C. E.

Fredrickson, E. D.

Menard, J. E.

Roquernore, A. L.

Sabbagh, S. A.

Zweben, S. J.

机构：

[1] Nova Photon Inc, Princeton, NJ 08540 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Johns Hopkins Univ, Laurel, MD 20723 USA

[4] Univ Calif Davis, Davis, CA 95616 USA

[5] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[6] Columbia Univ, New York, NY 10027 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2007年 / 363卷

关键词：

ELM; MARFE; NSTX; visible imaging;

D O I：

10.1016/j.jnucmat.2007.01.166

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fast-evolving structure of MARFEs and ELMs is observed in the National Spherical Torus Experiment (NSTX) using a fast-framing camera. It is shown that Type V ELMs, the small ELM regime in NSTX, is characterized by a poloidally propagating ionization front close to the separatrix position. The ELMs also interact with the main chamber MARFE observed in NSTX coupling its movement and partial burn-through with that of the ELM cycle. During this cycle a toroidally localized MARFE precursor is seen propagating upward along field lines at speed of the order of 15 km/s. This interaction between ELM activity and MARFEs may be responsible for slow heat pulse propagation speeds seen in the divertor region. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1000 / 1005

页数：6

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