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Y. Hamada, T. Watari, A. Nishizawa, O. Yamagishi, K. Narihara, K. Ida, Y. Kawasumi, T. Ido, M. Kojima, K. Toi and JIPPT-IIU Group
Detection of Kinetic Geodesic Acoustic Mode (KGAM) near the Center Region of JIPPT-IIU Tokamak Plasmas
Date of publication:
Aug. 3, 2010
tokamak, geodesic acoustic mode, GAM, KGAM, drift wave, HIBP, JIPPT-IIU
The broad and intense spectrum of the geodesic acoustic mode (GAM) oscillations near the magnetic axis of the tokamak plasmas with Te/Ti >> 1 becomes narrow and weak during neutral beam heating. It then becomes wide and weak during third harmonics ICRF heating. The wide spectra of GAMs are generally consistent with recent kinetic GAM (KGAM) theories.
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