Experimental investigation of standing wave interactions with a magnetized plasma in a minimum-B field
Experimental investigation of standing wave interactions with a magnetized plasma in a minimum-B field
复制标题
最小 B 场中驻波与磁化等离子体相互作用的实验研究
DOI：
10.1063/1.3033752
复制
发表时间：
2008
影响因子：
2.2
通讯作者：
S. Bhattacharjee
中科院分区：
文献类型：
--
作者：
I. Dey;S. Bhattacharjee
微波区的驻波是由等离子体真空边界的几何过渡反射引起的向前和向后移动波的叠加产生的。波在弱碰撞等离子体（νen scinco = 10−4）中优先衰减，靠近发射区（133 - 15 cm），电子温度高于平均值（Te>Teavg = 12 eV）。典型的e折叠阻尼长度是10厘米的数量级，并取决于波功率和等离子体碰撞。驻波的傅立叶谱表明，由于等离子体色散，真空波数下降约23%。在波的势槽中观察到电子俘获。
Standing waves in the microwave regime are generated by a superposition of forward and backward moving waves induced by reflections from geometrical transitions in the plasma vacuum boundary. The waves are preferentially damped in the weakly collisional (νen∕ω≅10−4) plasma near the launch region (∼3−15cm), where the electron temperature has a higher than average value (Te>Teavg∼12eV). Typical e-folding damping lengths are of the order of 10cm, and depend upon the wave power and plasma collisionality. Fourier spectrum of the standing waves indicates about 23% downshift in the vacuum wave-number due to plasma dispersion. Electron trapping is observed in the potential troughs of the waves.