In this paper, a numerical simulation is used to investigate the influence of applied voltage rise time on negative corona current characteristics in SF6 at atmospheric pressure. There were 23 particle species and 67 kinds of reactions considered in plasma chemical reactions. The influence of different rise times of the applied voltage is investigated. The spatial distributions of the radial electric field and total density of electrons and positive and negative ions, at and after the inception time of the corona current pulse, are used to explain the role of the rise time of the applied voltage on the mechanism of corona current pulse formation. It is found that the corona inception time, inception voltage, peak value of current pulse, number of sub-current pulses, and the time between the sub-pulses are strongly affected by the movement of negative ion clouds produced by the attachment. The quantitative analysis of the negative ions shows that the light ions preceded the heavy ions in their motion far away from the cathode and that this motion is governed by the rise time of the applied voltage.

中文翻译：

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模拟负电晕电流密度对施加电压上升时间的依赖性

本文通过数值模拟研究了外加电压上升时间对大气压下SF6负电晕电流特性的影响。等离子体化学反应中考虑了23种粒子和67种反应。研究了外加电压不同上升时间的影响。在电晕电流脉冲开始时和之后，径向电场的空间分布和电子和正负离子的总密度，用于解释外加电压的上升时间对电晕机制的作用。电流脉冲形成。发现电晕起始时间、起始电压、电流脉冲峰值、子电流脉冲数、并且子脉冲之间的时间受到附件产生的负离子云运动的强烈影响。负离子的定量分析表明，轻离子在远离阴极的运动中先于重离子，并且这种运动受外加电压的上升时间控制。