AExperimental studies of ablation-controlled arc discharges in plasma generator
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摘要: 通过衬套材料消融补充等离子体从而控制电弧生长的技术具有很好的应用前景。利用一个总贮能800kJ的模块化电容基脉冲功率源系统为消融控制电弧等离子体发生器强流放电提供电能输入,在一定的参数变化范围内,实验研究了脉冲功率源初始放电参数、等离子体发生器几何参数以及消融材料对消融控制电弧放电特性的影响规律。借助于理论分析,也可定性获得消融控制电弧等离子体压力和温度对上述影响参量变化的依赖关系。Abstract: Ablation-controlled arcs (ACA' s) compensated by materials being ablated from the capillary wall are of great interest. The pulsed power supply used to perform the experiments consisted of three modules storing 800kJ as a driver for an ablation-controlled arc plasma generator. A sequence of tests in which the capillary radius, length and ablated material are varied and in which the capillary power dissipation levels are varied in a certain range are discussed in order to determine the impedance matching between the discharge and the power source. By the analytical model, dependence of the plasma temperature and pressure on above variations could be known.
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