NON-AXISYMMETRIC ALFVEN WAVE EXCITED BY A HELICAL COUPLER
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概要
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Non-axisymmetric Alfven waves are excited by using a helical coupler in a cylindrical helium plasma with a finite beta value. The helical coupler, which consists of two symmetrical helical windings, exhibits a strong propagation directionality; slow waves of the m=-1 mode and fast waves of the m=+1 mode can be launched simultaneously from the coupler, but propagate each other in the opposite directions along the static magnetic field. Dispersion relations for both modes are fairly compared with a magnetohydrodynamic theory given by Woods on the assumption of appropriate boundary conditions. As a nonlinear phenomenon, subharmonic slow Aflven waves of the m=-1 mode have been observed when the pump frequency is close to or above the ion cyclotron frequency.
- 核融合科学研究所の論文
著者
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Inutake M.
Research Information Center Institute Of Plasma Physics Nagoya University:plasma Research Center Tsu
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Amagishi Y.
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Liberal Arts
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Amagishi Y.
Research Information Center Institute Of Plasma Physics Nagoya University:faculty Of Liberal Arts Sh
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Akitsu T.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Akitsu T.
Research Information Center Institute Of Plasma Physics Nagoya University:instituto De Pesquisas Esp
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Inutake M.
Research Information Center Institute Of Plasma Physics Nagoya University:plasma Research Center Tsukuba University
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