Drift waves in a high-density cylindrical helicon discharge
Drift waves in a high-density cylindrical helicon discharge
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高密度圆柱形螺旋放电中的漂移波
DOI：
10.1063/1.1864076
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发表时间：
2005
影响因子：
2.2
通讯作者：
V. Naulin
中科院分区：
文献类型：
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作者：
C. Schröder;O. Grulke;T. Klinger;V. Naulin
研究了具有较高等离子体-β和较高碰撞频率的螺旋等离子体中的低频不稳定性。单个可移动的朗缪尔探头和极向探头阵列用于时空动力学研究和背景等离子体参数的表征。所有实验观测到的不稳定性特征都与漂移波一致。基于等离子体双流体描述的漂移模的线性非局域数值模型被用来比较实验观测和理论。比较了数值频率和实验频率，发现实验观察到的频率与漂移波是一致的。数值结果表明，高电子碰撞频率提供了螺旋等离子体中最强的失稳机制。
A low-frequency instability is investigated in a helicon plasma, which is characterized by comparably high plasma-β and high collision frequencies. Single movable Langmuir probes and a poloidal probe array are used for studies of spatiotemporal dynamics and for characterization of the background plasma parameters. All experimentally observed features of the instability are found to be consistent with drift waves. A linear nonlocal numerical model for drift modes, based on the two-fluid description of a plasma, is used for comparison between the experimental observations and theory. Comparing numerical and experimental frequencies, it is found that the experimentally observed frequencies are consistent with drift waves. The numerical results show that the high electron collision frequencies provide the strongest destabilization mechanism in the helicon plasma.
通过螺旋天线生产大容量 Helicon 等离子体
DOI：
--
发表时间：
2003
期刊：
Proc.of XXVI International Conference on Phenomenon in Ionized Gases 1
影响因子：
--
作者：
Shunjiro Shinohara;et al.
通讯作者：
et al.