Polarization reversal of Alfvén waves in a non-axisymmetric region of a quadrupole-anchored tandem mirror.
Polarization reversal of Alfvén waves in a non-axisymmetric region of a quadrupole-anchored tandem mirror.
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四极锚定串联镜非轴对称区域中阿尔芬波的偏振反转。
DOI：
10.1103/physrevlett.65.3397
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发表时间：
1990
影响因子：
8.6
通讯作者：
Miyoshi
中科院分区：
文献类型：
--
作者：
Inutake;Ichimura;Hojo;Kimura;Katsumata;Adachi;Nakashima;Itakura;Mase;Miyoshi
Alfven波的模式选择激发是通过在Gamma 10串联反射镜的中央单元中使用方位旋转的射频天线来实现的。结果表明，波极化从中心单元的右旋到锚胞的左旋，反之亦然。锚定电池中的离子被中央电池中激发的快波加热，而不是由慢波加热。极化反转和与波模相关的离子加热可以用四极场区磁场的空间调制引起的快、慢Alfven波之间的模耦合引起的线性模转换来解释。
Mode-selective excitation of Alfven waves is made by use of azimuthally rotating, radio-frequency antennas in the central cell of the GAMMA 10 tandem mirror. It is found that the wave polarization reverses from right handed in the central cell to left handed in the anchor cell and vice versa. Ions in the anchor cell are significantly heated by a fast wave excited in the central cell and not by a slow wave. The polarization reversal and the wave-mode-dependent ion heating are interpreted in terms of a linear mode conversion which is caused by a mode coupling between fast and slow Alfven waves via a spatial modulation of the magnetic field in the quadrupole-field region.