Parallel Ion Flow Velocity Measurement Using Laser Induced Fluorescence Method in an Electron Cyclotron Resonance Plasma
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概要
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Parallel ion flow velocity along a magnetic field has been measured using a laser induced fluorescence (LIF) method in an electron cyclotron resonance (ECR) argon plasma with a weakly-diverging magnetic field. To measure parallel flow velocity in a cylindrical plasma using the LIF method, the laser beam should be injected along device axis; however, the reflection of the incident beam causes interference between the LIF emission of the incident and reflected beams. Here we present a method of quasi-parallel laser injection at a small angle, which utilizes the reflected beam as well as the incident beam to obtain the parallel ion flow velocity. Using this method, we observed an increase in parallel ion flow velocity along the magnetic field. The acceleration mechanism is briefly discussed on the basis of the ion fluid model.
- 社団法人 プラズマ・核融合学会の論文
著者
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Okamoto Atsushi
Department Of Biochemistry Osaka Medical College
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YOSHIMURA Shinji
National Institute for Fusion Science
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Terasaka Kenichiro
Interdisciplinary Graduate School Of Engineering Science Kyushu University
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Ogiwara Kohei
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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Aramaki Mitsutoshi
Department of Electrical Engineering and Computer Science, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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TANAKA Masayoshi
Interdisciplinary Graduate School of Engineering Science, Kyushu University, Kasuga 816-8580, Japan
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