Velocity Field Estimation using Tomography in a Cylindrical Plasma

Daiki NISHIMURA; Akihide FUJISAWA; Yoshihiko NAGASHIMA; Chanho MOON; Kotaro YAMASAKI; Takashi NISHIZAWA; Taiki KOBAYASHI; Tatsuya KOBAYASHI; Akihiro SHIMIZU; Tokihiko TOKUZAWA

doi:10.1585/pfr.19.1201005

Rapid Communications

Velocity Field Estimation using Tomography in a Cylindrical Plasma

Daiki NISHIMURA, Akihide FUJISAWA, Yoshihiko NAGASHIMA, Chanho MOON, Kotaro YAMASAKI, Takashi NISHIZAWA, Taiki KOBAYASHI, Tatsuya KOBAYASHI, Akihiro SHIMIZU, Tokihiko TOKUZAWA

Author information

Daiki NISHIMURA
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Akihide FUJISAWA
Research Institute for Applied Mechanics, Kyushu University
Research Center for Plasma Turbulence, Kyushu University
Yoshihiko NAGASHIMA
Research Institute for Applied Mechanics, Kyushu University
Research Center for Plasma Turbulence, Kyushu University
Chanho MOON
Research Institute for Applied Mechanics, Kyushu University
Research Center for Plasma Turbulence, Kyushu University
Kotaro YAMASAKI
Graduate School of Advanced Science and Engineering, Hiroshima University
Takashi NISHIZAWA
Research Institute for Applied Mechanics, Kyushu University
Research Center for Plasma Turbulence, Kyushu University
Taiki KOBAYASHI
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Tatsuya KOBAYASHI
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science, National Institute of Natural Sciences
Akihiro SHIMIZU
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science, National Institute of Natural Sciences
Tokihiko TOKUZAWA
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science, National Institute of Natural Sciences

Keywords: velocimetry, tomography, cylindrical plasma, plasma emission

JOURNAL FREE ACCESS

2024 Volume 19 Pages 1201005

DOI https://doi.org/10.1585/pfr.19.1201005

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Abstract

This article presents a new method, called extended Rotational Movement Analysis (e-RoMA), to estimate the velocity field of a cylindrical plasma from its two-dimensional images based on Fourier-Bessel function expansion. The proposed method is applied to tomography images of a plasma produced in a linear cylindrical device PANTA and succeeded in obtaining the two- dimensional velocity field. The first results suggest an issue to be investigated, that is, the presence of azimuthal asymmetry in the velocity field.

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