空气中大气压下均匀辉光放电的可能性

Possibility of atmospheric pressure glow discharge in air

利用介质阻挡电极结构 ,对 1 0 132 5× 10 5Pa气压下空气间隙中的放电进行了实验研究 ,数值模拟计算了实验条件下电子雪崩的发展过程 .结果表明 :对于长度不大于 2mm的空气间隙 ,可能实现辉光放电 .对于长度不小于5mm的空气间隙 ,如果不能设法降低放电场强 ,放电必然是流注形式 ,不可能实现辉光放电 .另外 ,实验结果未能验证“离子捕获”

The atmospheric pressure discharge in an air gap between two dielectric barrier electrodes has been studied experimentally and the development of an electron avalanche in such an air gap was simulated numerically. The results show that, while it is possible to obtain glow discharge in an air gap not longer than 2 mm, the streamer discharge could only be obtained in an air gap longer than 5 mm if no methods could be used to lower the electric field when discharging. The 'ion trapping mechanism', which was said to be responsible for the atmospheric pressure glow discharge, was not verified in the experiments.