He discharge in a coaxial dielectric barrier discharge (DBD) device develops in three stages: first, a Townsend-glow-type plasma spreads in the region between the electrodes; second, a plasma bullet (streamer type discharge) propagates axially and; third, the bullet transitions into a surface discharge at the dielectric surface. These mode transitions are quite different from planar type DBD, in which one discharge mode basically corresponds to one discharge pulse. From fluid-based numerical analysis, the bullet propagation is obeyed by trapping with strong electric fields induced by grounded electrode underneath the dielectric barrier and by surface charge accumulated on the dielectric surface.

中文翻译：

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同轴介质阻挡层氦放电的数值分析：三阶段模式转变和内部子弹传播

他在同轴介电势垒放电（DBD）装置中的放电分为三个阶段：首先，汤森德辉光型等离子体扩散到电极之间的区域中；第二，等离子子弹（流光型放电）轴向传播，第三，子弹在电介质表面转变为表面放电。这些模式转换与平面型DBD完全不同，在平面型DBD中，一种放电模式基本上对应于一个放电脉冲。从基于流体的数值分析中，子弹的传播可以通过捕获由电介质势垒下方的接地电极感应的强电场以及电介质表面上积累的表面电荷来捕获。