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Kobayashi T, Birkenmeier G, Wolfrum E, et al. Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array. Rev Sci Instrum. 2014;85(8):083507doi: 10.1063/1.4893482.
Kobayashi, T., Birkenmeier, G., Wolfrum, E., Laggner, F. M., Willensdorfer, M., Stroth, U., Inagaki, S., Itoh, S. I., & Itoh, K. (2014). Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array. The Review of scientific instruments, 85(8), 083507. https://doi.org/10.1063/1.4893482
Kobayashi, T, et al. "Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array." The Review of scientific instruments vol. 85,8 (2014): 083507. doi: https://doi.org/10.1063/1.4893482
Kobayashi T, Birkenmeier G, Wolfrum E, Laggner FM, Willensdorfer M, Stroth U, Inagaki S, Itoh SI, Itoh K. Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array. Rev Sci Instrum. 2014 Aug;85(8):083507. doi: 10.1063/1.4893482. PMID: 25173269.
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Rev Sci Instrum. 2014 Aug;85(8):083507. doi: 10.1063/1.4893482.

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

The Review of scientific instruments

T Kobayashi, G Birkenmeier, E Wolfrum, F M Laggner, M Willensdorfer, U Stroth, S Inagaki, S-I Itoh, K Itoh

Affiliations

  1. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan.
  2. Max Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany.
  3. Institute of Applied Physics, Vienna University of Technology, 1040 Vienna, Austria.
  4. Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan.
  5. National Institute for Fusion Science, Toki 509-5292, Japan.

PMID: 25173269 DOI: 10.1063/1.4893482

Abstract

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.

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