Fluctuation Suppression during Confinement Potential Formation in GAMMA 10

M. YoshikawaPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

Y. MiyataPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

M. MizuguchiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

Y. OonoPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

F. YaguchiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

Y. ShimaPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

N. ImaiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

M. IchimuraPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

T. ImaiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

T. KariyaPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

I. KatanumaPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

Y. NakashimaPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

H. HojoPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

R. MinamiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

Y. YamaguchiPlasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan

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Abstract

The suppression of the potential fluctuation was clearly observed by a gold neutral beam probe (GNBP) during the higher potentials and positive electric fields driven by electron cyclotron heating. The particle flux evaluated from the phase difference between the potential and density fluctuations measured by GNBP showed the radial outward flux and correlates with the decrease in the stored energy. When flux is suppressed by the potential formation, the quick plasma stored energy increase is observed.

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Fluctuation Suppression during Confinement Potential Formation in GAMMA 10

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Fluctuation Suppression during Confinement Potential Formation in GAMMA 10

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