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首页> 外文期刊>Plasma and Fusion Research >Parallel Ion Flow Velocity Measurement Using Laser Induced Fluorescence Method in an Electron Cyclotron Resonance Plasma
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Parallel Ion Flow Velocity Measurement Using Laser Induced Fluorescence Method in an Electron Cyclotron Resonance Plasma

机译：电子回旋共振等离子体中激光诱导荧光法并行离子流速度测量

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摘要

Parallel ion flow velocity along a magnetic field has been measured using a laser induced fluorescence (LIF) method in an electron cyclotron resonance (ECR) argon plasma with a weakly-diverging magnetic field. To measure parallel flow velocity in a cylindrical plasma using the LIF method, the laser beam should be injected along device axis; however, the reflection of the incident beam causes interference between the LIF emission of the incident and reflected beams. Here we present a method of quasi-parallel laser injection at a small angle, which utilizes the reflected beam as well as the incident beam to obtain the parallel ion flow velocity. Using this method, we observed an increase in parallel ion flow velocity along the magnetic field. The acceleration mechanism is briefly discussed on the basis of the ion fluid model.
机译：已经在具有弱发散磁场的电子回旋共振（ECR）氩等离子体中使用激光诱导荧光（LIF）方法测量了沿磁场的平行离子流速。要使用LIF方法测量圆柱体等离子体中的平行流速，应沿设备轴注入激光束。但是，入射光束的反射会导致入射光束和反射光束的LIF发射之间发生干涉。在这里，我们提出一种小角度准平行激光注入的方法，该方法利用反射光束和入射光束来获得平行离子流速。使用这种方法，我们观察到沿磁场平行离子流速的增加。在离子流体模型的基础上简要讨论了加速机理。

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