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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Corona discharge effect on charge and energy transfer in dielectric barrier discharge
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Corona discharge effect on charge and energy transfer in dielectric barrier discharge

机译：电晕放电对介质屏障放电中的电荷和能量传递

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摘要

To study characteristics of corona discharge effect on dielectric barrier discharge (DBD) with small curvature radius electrodes, two sets of comparative experiments were conducted on plate-plate with multi-needle-plate electrode structures and plate-plate with microcavity-plate electrode structures. At first, V-Q Lissajous figures were employed to analyze the air-gap voltage and charge transport in the first part of the experiment, and the result showed that the transferred charge of the multi-needle-plate electrode structure was about 1.5 times that of the plate-plate structure under the same power consumption. The second part of the experiment verified the above result, that is, the corona discharge effect on the microcavity produced a greater amount of transferred charge. Then, a reduced electric field was adopted to analyze the variation of average electron energy and the difference in molecular vibration temperature, and the corona discharge effect of the needle electrode on transfer of charge and energy are discussed. It was revealed that, in the non-uniform electric field of DBD, the local reduced electric field of the electrode tip with small radius of curvature was up to 750 Td, but the reduced electric fields in most of the air gaps were far lower than those of the plate-plate structure. Therefore, the average electron energy around the electrode tip was about 13 eV, which facilitates the collision and ionization of the electrons in air and the production of a large amount of charge. However, in this case, the temperature of molecular vibration was lower, and the excited particles generated in the discharge process were less than those generated by the plate-plate structure.
机译：为了研究具有小曲率半径电极的电介质阻挡放电（DBD）的电晕放电（DBD）的特性，在具有多针板电极结构和具有微腔板电极结构的板板上进行两组比较实验。首先，采用VQ Lissajous数字来分析实验的第一部分中的气隙电压和电荷输送，结果表明，多针板电极结构的转移电荷约为1.5倍板材结构在相同的功耗下。实验的第二部分验证了上述结果，即，对微腔的电晕放电效果产生了更大的转移电荷。然后，采用了减少的电场来分析平均电子能量的变化和分子振动温度的差异，并且讨论了针电极对电荷转移和能量的电晕效应。据透露，在DBD的非均匀电场中，具有小曲率半径的电极尖端的局部降低的电场最高可达750 Td，但大部分空气间隙中的降低的电场远低于板材结构的那些。因此，电极尖端周围的平均电子能量约为13eV，这促进了空气中电子的碰撞和电离和大量电荷的产生。然而，在这种情况下，分子振动的温度较低，并且在放电过程中产生的激发颗粒小于由板材结构产生的颗粒。

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