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Title: Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array

This article proposes a new method to evaluate basic characteristics of the dynamics of a coherent plasma structure (blob). With this method, one can evaluate the propagation angle of a blob in a two-dimensional plasma cross section as well as the blob velocity, size, and amplitude from one-dimensional data. The method is applied to blob measurements from the Lithium beam emission spectroscopy system in ASDEX-Upgrade. Statistical features of the observed blob velocities, angles of propagation, blob sizes, and amplitudes are discussed. The validity of the method is examined by comparing two values of the propagation angle that are evaluated in an independent manner.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [4] ;  [3] ;  [5] ; ;  [6] ;  [2] ;  [7] ;  [2]
  1. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580 (Japan)
  2. (Japan)
  3. Max Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching (Germany)
  4. Institute of Applied Physics, Vienna University of Technology, 1040 Vienna (Austria)
  5. (Austria)
  6. Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580 (Japan)
  7. National Institute for Fusion Science, Toki 509-5292 (Japan)
Publication Date:
OSTI Identifier:
22314420
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AMPLITUDES; ASDEX TOKAMAK; ATOMIC BEAMS; EMISSION SPECTROSCOPY; LITHIUM; ONE-DIMENSIONAL CALCULATIONS; PLASMA; PLASMA DIAGNOSTICS