Effect of the barrier material in a Townsend barrier discharge in nitrogen at atmospheric pressure
Effect of the barrier material in a Townsend barrier discharge in nitrogen at atmospheric pressure
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DOI：
10.1088/0022-3727/39/8/016
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发表时间：
2006-04
期刊：
影响因子：
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通讯作者：
Y. Golubovskii;V. Maiorov;P. Li;M. Lindmayer
中科院分区：
文献类型：
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作者：
Y. Golubovskii;V. Maiorov;P. Li;M. Lindmayer
实验和理论研究了氮中7 kHz频率的类汤森德阻挡放电。在一定的参数范围内，放电是均匀的，这取决于屏障的材料。势垒的介电常数越高，这个范围越窄。结果表明，放电特性不仅与阻挡层的总电容有关，还与表面附近的介电套的介电常数有关。汤森德放电存在的测量范围与基于自一致模型的计算一致。此外，对势垒放电的二维模拟表明，相对于径向波动的放电稳定性可能取决于势垒的介电常数。阻挡材料的作用可以解释为介电常数对表面电荷引起的电场的影响。
A Townsend-like barrier discharge in nitrogen at 7 kHz frequency is studied experimentally and theoretically. The discharge is homogeneous under a certain range of parameters, which depends on the material of the barriers. The higher the dielectric permittivity of barriers is, the narrower is this range. It is shown that the discharge properties do not only depend on the total capacitance of barriers but they also explicitly depend on the permittivity of a dielectric sheath near the surface. Measured ranges of existence of a Townsend discharge agree with the calculations based on a self-consistent model. Also, the two-dimensional simulations of the barrier discharge show that the stability of the discharge relative to radial fluctuations may depend on the permittivity of barriers. The effect of barrier material is interpreted as the influence of dielectric permittivity on the electric field induced by surface charges.