High-speed imaging of edge turbulence in NSTX

2003255 citationsJournal Article

Authors

S. J. Zweben · Princeton Plasma Physics Laboratory

R. J. Maqueda · Los Alamos National Laboratory

D.P. Stotler · Princeton Plasma Physics Laboratory

A. M. Keesee · West Virginia University

J.A. Boedo · University of California, San Diego

C. E. Bush · Oak Ridge National Laboratory

S. Kaye

Abstract

The two-dimensional radial vs poloidal structure and motion of edge turbulence in the National Spherical Torus Experiment (NSTX) were measured using high-speed imaging of the visible light emission from a localized neutral gas puff. Edge turbulence images are shown and analysed for Ohmic, L- and H-mode plasma conditions. The two-dimensional images often show regions of strong localized light emission known as 'blobs', which move both poloidally and radially at a typical speed of ≈105 cm s−1, and sometimes show spatially periodic features.

Topics & Keywords

Magnetic confinement fusion research Ionosphere and magnetosphere dynamics Solar and Space Plasma Dynamics

Publication Details

Published in: Nuclear Fusion

Volume 44, Issue 1, pp. 134-153

DOI: 10.1088/0029-5515/44/1/016

Field-Weighted Citation Impact: 25.38

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High-speed imaging of edge turbulence in NSTX

Authors

Abstract

Topics & Keywords

Publication Details