Electrostatic instability of an AC-driven discharge in dense air

被引:4
|
作者
Auzas, Frederic [1 ]
Makarov, Maxime [1 ]
Puech, Vincent [2 ]
Tardiveau, Pierre [2 ]
机构
[1] Renault Technoctr, F-78288 Guyancourt, France
[2] Univ Paris 11, Phys Gaz & Plasmas Lab, F-91405 Orsay, France
关键词
AC-driven discharge; electrostatic instability; fast imaging; high pressure;
D O I
10.1109/TPS.2008.924454
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The results of fast imaging of a streamerlike discharge dynamics around a pin electrode under quasi-continuous ac excitation in air at 1-20 bar are presented. Under a relatively low pressure of 1-3 bar, the discharge filaments show a long smooth and well-branched pattern. As the pressure increases, they get smaller and become twisted. Based on the presented photographs, it was proposed that an electrostatic instability induces secondary radial filaments developing around primary channels, which change the initial straight shape of the discharge.
引用
收藏
页码:944 / 945
页数:2
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