Effect of Plasma Biasing on Suppression of Electrostatic Fluctuation in the Edge Region of STP-3(M) Reversed Field Pinch(Gases, Plasmas and Electric Discharges)
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概要
- 論文の詳細を見る
A plasma biasing experiment using an insertable electrode has been carried out in the STP-3(M) reversed field pinch. The profiles of electron density n_e, electron temperature T_e and plasma potential V_s were measured with an electrostatic probe array in the edge region of the plasma. The effect of biasing is observed as an increase of edge electron density and suppression of fluctuation amplitudes in n_e, T_e and V_s. As a result, both the electrostatic particle and energy fluxes are reduced and confinement improvement is observed, which is caused by the formation of E×B velocity shear layer. The reduction in both fluctuation amplitudes and coherence between fluctuating quantities contributes to this improvement. The formation of velocity shear layer is dependent on the insertion depth of the electrode, which is possibly related to the location where additional power is deposited through biasing. The extension of plasma lifetime is also observed in the biased discharges.
- 社団法人日本物理学会の論文
- 2005-02-15
著者
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政宗 貞男
京都工繊大工芸科学
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SATO Koichi
Department of Physics, Graduate School of Science, Kyoto University
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齋藤 一弥
筑波大院数物
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Sato Koichi
Department Of Energy Engineering And Science Nagoya University
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Sato Ko-ichi
Plasma Science Center Nagoya University
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Saito K
Research Center For Molecular Thermodynamics Graduate School Of Science Osaka University
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MASAMUNE Sadao
Department of Electronics, Kyoto Institute of Technology
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Masamune Sadao
Department Of Electrical Engineering Kyoto Institute Of Technology
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ARIMOTO Hideki
Department of Energy Engineering and Science, Nagoya University
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Saito G
Department Of Chemistry Faculty Of Science Tokyo Metropolitan University
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Saito K
Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo
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Yambe Kiyoyuki
Department Of Energy Engineering And Science Nagoya University
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Arimoto Hideki
Department Of Energy Engineering And Science Nagoya University
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Sato Koichi
Department Of Cardio-renal Medicine And Hypertension Nagoya City University Graduate School Of Medic
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