Excitation and propagation of low frequency wave in a FRC plasma
Excitation and propagation of low frequency wave in a FRC plasma
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FRC 等离子体中低频波的激发和传播
DOI：
10.1088/0029-5515/43/10/016
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发表时间：
2003
期刊：
影响因子：
3.3
通讯作者：
S. Goto
中科院分区：
文献类型：
--
作者：
S. Okada;K. Yamanaka;S. Yamamoto;T. Masumoto;K. Kitano;T. Asai;F. Kodera;M. Inomoto;S. Yoshimura;M. Okubo;S. Sugimoto;S. Ohi;S. Goto
低频f = f-pseudonfci，（fci：外场Bw中的离子陀螺频率）波用天线激发，该天线与具有场反转配置（FRC）的等离子体中的反应器兼容。在FRC等离子体的分界线rs附近和外部，虽然所施加的波主要是压缩模式，但在激发波的磁场扰动中观察到方位角和径向分量，其传播的色散关系与剪切Alfven波一致。这些扰动穿透深入到FRC等离子体的表面，在那里的波频率超过当地的离子陀螺仪频率和传播沿着磁力线与声速，其行为是一致的剪切阿尔芬波与有限的温度校正。轴向磁扰动从天线沿轴向和径向传播穿过等离子体柱。
Low frequency f = ⅕ − ⅓fci, (fci: ion gyro frequency in the external field Bw) waves are excited with an antenna which is compatible with a reactor in a plasma with field reversed configuration (FRC). Near and outside the separatrix rs of the FRC plasma, though the applied wave is mainly in compressional mode, azimuthal and radial components are observed in the magnetic field disturbance of the excited wave, which propagate with the dispersion relation consistent with the shear Alfven wave. These disturbances penetrate deep into the FRC plasma across the surface where the wave frequency exceeds local ion gyro frequency and propagate along magnetic lines of force with sound velocity, which behaviour is consistent with the shear Alfven wave with finite temperature correction. Axial magnetic disturbance propagates axially and radially from the antenna across the plasma column.