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Magnetic Field Dependence of Plasma Properties Observed with Tomography in PANTA

Issei MARUI, Akihide FUJISAWA¹⁾, Yoshihiko NAGASHIMA¹⁾, Chanho MOON¹⁾, Kotaro YAMASAKI¹⁾, Sigeru INAGAKI¹⁾ and Takuma YAMADA²⁾

Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan

1)

Research Institute for Applied Mechanics, Kyushu University, Kasuga Kohen, Kasuga, Fukuoka 816-8580, Japan

2)

Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

(Received 16 February 2020 / Accepted 2 March 2020 / Published 14 April 2020)

Abstract

The magnetic field dependence of a linear argon plasma is examined with a tomography system in PANTA. It is found that a plateau region exists around a particular region of magnetic field (∼600 G), below and above which the plasma changes the properties of emission and its fluctuations. A model is proposed to explain the observed dependence, and the comparison demonstrates that the dependence should be ascribed to the change in the Lamor motion inside the plasma production source using helicon wave and the plasma transport after the production.

Copyright (c) 2020 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

magnetized helicon plasma, plasma production, tomography, plasma emission, fluctuation

DOI: 10.1585/pfr.15.1201018

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References

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• [2] S. Oldenbürger et al., Plasma Phys. Control. Fusion 54, 055002 (2012).
• [3] A. Fujisawa et al., Plasma Phys. Control. Fusion 58, 025005 (2016).
• [4] K. Yamasaki et al., Rev. Sci. Instrum. 88, 093507 (2017).