中文摘要：

为了对多针对板正、负电晕放电电离区的微观特性进行分析,采用统计和理论分析的方法对前期利用发射光谱法测量电离区形貌的实验结果进行了研究,得到了高压针电极周围N2第2正带跃迁谱峰光强分布的等光强线曲线方程;电离区按N2第2正带跃迁谱峰的分布可分为内、中、外3层;在确定的电压下,由内到外N2第2正带跃迁谱峰与其等值曲面面积的乘积随着距针极的距离呈小﹣大﹣小的变化趋势,而电子的平均速度则呈大﹣小﹣大的相反变化趋势;电流密度与N2第2正带跃迁谱峰呈良好的线性关系。上述结论说明利用发射光谱法可研究放电电离区的微观特性,并为有关电离放电的应用提供理论参考。

英文摘要：

In order to analyze the microscopic characteristics of the ionization region in multi-needle-to-plate positive and negative corona discharge,the statistical and theoretical methods were adopted to analyze the relative experimental data on the morphology of the ionization region,which were measured by the method of optical emission spectrum,and the isophote equations were obtained.The main conclusions can be drawn that,with the increase of distance from needle,the ionization region can be divided into inner,middle and outer layers by the second positive brand intensity distribution;the product of the second positive brand intensity and its isophote area vary from small to large and then small again,while the average speed of electrons shows a contrary trend with the product of the second positive brand intensity and its isophote area;there exists a nearly linear relationship between current density and the second positive brand intensity.Thus,the optical emission spectrum method can be used to study the microscopic characteristics of discharge ionization region,and provide the theoretical basis for related corona discharge applications.