<RESEARCH REPORT>FAST WAVE INJECTION INTO HIGH TEMPERATURE TOKAMAK PLASMAS IN THE LOWER-HYBRID-DENSITY REGIME OF JIPP T-IIU

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概要

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• Hard X-ray emission (30≲E≲200 keV) and suprathermal electron cyclotron emission are enhanced for density up to n^^-_e∿1.8×10^<13>cm^<-3> (n_<eo>∿2.3×10^<13>cm^<-3>) by launching fast waves of 800 MHz into high temperature tokamak plasmas (T_<eo>≳1keV) in the regime of lower hybrid resonance density (1.3≳f_o/f_<LH>(0)≳0.9) on JIPP T-IIU. The observed radial profile of the hard X-ray emission indicates that the suprathermal electrons are localized near the plasma axis (r/a_L≲0.4; a_L : limiter radius), which is confirmed by the data obtained from a soft X-ray detector array and a high resolution crystal spectrometer. In the typical case of n^^-e∿1.3-1.5×10^<13>cm^<-3> with phase differences between adjacent antennas Δφ=+60°, the rf power absorbed by the suprathermal electrons is about 15% of the net injected rf power. The absorption rate is consistent with that of Landau damping on suprathermal electrons which pre-exist in a target plasma. The increment of the suprathermal electron density corresponds to an rf driven current of∿25kA, if the effective energy of the electrons is assumed to be 50 keV. The dependences of the increment of total radiation and the amplitude of a lower side band (f=f_o-f_<ci>) on the phase difference Δφ agree well with the linear theory on fast wave coupling and propagation. The experimental data are also compared with preliminary results of slow wave injection into a similar target plasma.

• 核融合科学研究所の論文

著者

• Eckhartt D.

  Institute Of Plasma Physics Nagoya University:on Leave From Max-planck-institut Fur Plasmaphysik

• Toi K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Watari T.

  Institute of Laser Engineering, Osaka Univ.

• Sato K.

  Institute of Plasma Physics, Nagoya University

• Toi K.

  Institute of Plasma Physics, Nagoya University

• HAMADA Y.

  Institute of Plasma Physics, Nagoya University

• OHKUBO K.

  Institute of Plasma Physics, Nagoya University

• AKIYAMA R.

  Institute of Plasma Physics, Nagoya University

• ANDO R.

  Institute of Plasma Physics, Nagoya University

• HIROKURA S.

  Institute of Plasma Physics, Nagoya University

• IDA K.

  Institute of Plasma Physics, Nagoya University

• KAKO E.

  Institute of Plasma Physics, Nagoya University

• KAWAHATA K.

  Institute of Plasma Physics, Nagoya University

• KAWASUMI Y.

  Institute of Plasma Physics, Nagoya University

• KITAGAWA S.

  Institute of Plasma Physics, Nagoya University

• MASAI K.

  Institute of Plasma Physics, Nagoya University

• MATSUOKA K.

  Institute of Plasma Physics, Nagoya University

• MOHRI A.

  Institute of Plasma Physics, Nagoya University

• MORITA S.

  Institute of Plasma Physics, Nagoya University

• OGAWA I.

  Institute of Plasma Physics, Nagoya University

• OGAWA Y.

  Institute of Plasma Physics, Nagoya University

• SASAO M.

  Institute of Plasma Physics, Nagoya University

• SATO K.N.

  Institute of Plasma Physics, Nagoya University

• TANAHASHI S.

  Institute of Plasma Physics, Nagoya University

• TANIGUCHI Y.

  Institute of Plasma Physics, Nagoya University

• YAMAZAKI K.

  Institute of Plasma Physics, Nagoya University

• Tanaka S.

  Biol. Lab. Nippon Med. Schl.

• Hayashi Y.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sato K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Kawahata K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Hiroe S.

  Research Information Center Institute Of Plasma Physics Nagoya University

• AKIYAMA R.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• ANDO R.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• IDA K.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• KAWASUMI Y.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• KITAGAWA S.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Miyamoto K.

  Dept. Biol. Fac. Sci. Tokyo Metro. Univ.

• Kako E.

  Research Information Center Institute Of Plasma Physics Nagoya University:national Laboratory For Hi

• Kawasumi Y.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sato K.

  Institute Of Plasma Physics Nagoya University

• Kitagawa S.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Hirokura S.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sunako K.

  Research Information Center Institute Of Plasma Physics Nagoya University:tokai University

• Kadota K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Terumichi Y.

  Research Information Center Institute Of Plasma Physics Nagoya University:department Of Physics Facu

• Matsuura K.

  Dept. Biol. Fac. Sci. Tokyo Metro. Univ.

• Ando R.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sato K.

  Dept. Biol. Fac. Sci. Tokyo Metro. Univ.

• Ida K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sato K.

  Research Information Center Institute Of Plasma Physics Nagoya University:tokai University

• Mohri A.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Masai K.

  Institute Of Plasma Physics Nagoya University

• Takasugi K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Watari T.

  Institute Of Plasma Physics Nagoya University

• Sasao M.

  Institute Of Plasma Physics Nagoya University

• Osanai Y.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Tanahashi S.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Akiyama R.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Ohkubo K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Watari T.

  Institute Of Laser Engineering Osaka Univ.

• Kawahata K.

  Plasma Physics Laboratory Kyoto University

• Hamada Y.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Haruyama Y.

  Research Information Center Institute Of Plasma Physics Nagoya University:faculty Of Engineering Kyo

• Ogawa I.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Kawahata K.

  Institute Of Plasma Physics Nagoya University

• Haruyama Y.

  Research Information Center Institute Of Plasma Physics Nagoya University:faculty Of Engineering Kyoto Univ.

• Okubo Y.

  Institute Of Plasma Physics Nagoya University

• Mohri A.

  Institute Of Plasma Physics Nagoya University

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