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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Investigating near-anode plasma layers of very high-pressure arc discharges
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Investigating near-anode plasma layers of very high-pressure arc discharges

机译：研究极高压电弧放电的近阳极等离子体层

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摘要

Numerical and experimental investigation of near-anode layers of very high-pressure arcs in mercury and xenon is reported. The simulation is performed by means of a recently developed numerical model in which the whole of a near-electrode layer is simulated in the framework of a single set of equations without simplifying assumptions such as thermal equilibrium, ionization equilibrium and quasi-neutrality and which was used previously for a simulation of the near-cathode plasma layers. The simulation results support the general understanding of similarities and differences between plasma-cathode and plasma-anode interaction in high-pressure arc discharges established in preceding works. In particular, the anode power input is governed primarily by, and is approximately proportional to, the arc current. In the experiment, the spectral radiance from the electrodes and the near-electrode regions in xenon arcs was recorded. The derived total anode power input and near-anode plasma radiance distribution agree reasonably well with the simulation results.
机译：报道了汞和氙中极高压电弧近阳极层的数值和实验研究。通过最近开发的数值模型进行模拟，其中在单个方程组的框架内模拟整个近电极层，而无需简化诸如热平衡，电离平衡和准中性的假设。以前用于模拟近阴极等离子体层。仿真结果支持对先前工作中建立的高压电弧放电中等离子-阴极和等离子-阳极相互作用之间异同的普遍理解。特别地，阳极功率输入主要由电弧电流控制，并且大致成比例。在实验中，记录了氙弧中电极和近电极区域的光谱辐射。得出的总阳极功率输入和近阳极等离子体辐射度分布与模拟结果相当吻合。

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