汤森放电

近十年来，大气压均匀DBD成了研究热点。目前研究的大气压均匀DBD主要是指不存在微放电的辉光和汤森放电，这种放电通常要求单一气体。

Over the past decade , the atmospheric pressure homogeneous dielectric barrier discharge research focus mainly on the glow and Townsend discharge which is charateristiced as the absent of micro-discharge .

模拟结果显示，在一定范围内（1kHz-100kHz）提高外加电源频率，先后出现了三种放电模式&汤森放电、辉光放电和局部辉光放电。

The numerical simulations show that when the driven frequency increases in the range ( 1 kHz-100 kHz ), three discharge modes , Townsend discharge , glow discharge , and local glow discharge , appear in turn .

研究还发现了提高外加电压幅值，汤森放电阶段、辉光放电阶段以及模式转化时，放电电流与气体电压变化特征。

It is found that the Townsend mode turns into the glow mode when the external voltage increases over a certain critical value . With the increase of the external voltage , the transition characteristics of discharge current density and gas voltage in both Townsend and glow discharges are obtained .

从基本观点，对汤森气体放电理论和流柱击穿理论进行了分析和探讨，指出了其中的弱点和不足。

From the fundamental point of view , the Townsend discharge theory and the streamer theory were respectively analyzed and examined .