A Method to Analyze Plasma Images Using Modified Fourier-Bessel Functions

Yuki NISHIMURA; Akihide FUJISAWA; Yoshihiko NAGASHIMA; Chanho MOON; Takashi NISHIZAWA; Tatsuya KOBAYASHI; Akihiro SHIMIZU; Tokihiko TOKUZAWA; Takeshi IDO; Daiki NISHIMURA; Taiki KOBAYASHI

doi:10.1585/pfr.19.1201014

Rapid Communications

A Method to Analyze Plasma Images Using Modified Fourier-Bessel Functions

Yuki NISHIMURA, Akihide FUJISAWA, Yoshihiko NAGASHIMA, Chanho MOON, Takashi NISHIZAWA, Tatsuya KOBAYASHI, Akihiro SHIMIZU, Tokihiko TOKUZAWA, Takeshi IDO, Daiki NISHIMURA, Taiki KOBAYASHI

Author information

Yuki NISHIMURA
Interdisciplinary Graduate School of Engineering Science, Kyushu University
Akihide FUJISAWA
Research Institute for Applied Mechanics, Kyushu University
Yoshihiko NAGASHIMA
Research Institute for Applied Mechanics, Kyushu University
Chanho MOON
Research Institute for Applied Mechanics, Kyushu University
Takashi NISHIZAWA
Research Institute for Applied Mechanics, Kyushu University
Tatsuya KOBAYASHI
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science
Akihiro SHIMIZU
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science
Tokihiko TOKUZAWA
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science
Takeshi IDO
Research Institute for Applied Mechanics, Kyushu University
National Institute for Fusion Science
Daiki NISHIMURA
Interdisciplinary Graduate School of Engineering Science, Kyushu University
Taiki KOBAYASHI
Interdisciplinary Graduate School of Engineering Science, Kyushu University

Keywords: plasma, turbulence, tomography, Fourier-Bessel function, Modified Fourier-Bessel Function

JOURNAL FREE ACCESS

2024 Volume 19 Pages 1201014

DOI https://doi.org/10.1585/pfr.19.1201014

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Abstract

A new method is proposed to analyze plasma image of tomography using modified Fourier-Bessel Functions (FBF) instead of the original FBF analysis. The application of the method to an assumed plasma image shows that the difference between the original and the fitting image is improved considerably to that of FBF, owing to giving a better fitting inside the plasma and eliminating the ghost values outside the plasma, without any disadvantages in analysis of plasma structures and patterns.

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