Experimental Research on Mode Transitions of Atmospheric Pressure Helium Dielectric Barrier Discharge
Experimental Research on Mode Transitions of Atmospheric Pressure Helium Dielectric Barrier Discharge
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大气压氦介质阻挡放电模态转变实验研究
DOI:
10.1109/tps.2016.2597260
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发表时间:
2016-08
影响因子:
1.5
通讯作者:
Guan-Jun Zhang
中科院分区:
文献类型:
--
作者:
Hengchi Ma;Guimin Xu;Haibao Mu;Guan-Jun Zhang
The discharge mode transitions and the characteristics of atmospheric pressure dielectric barrier discharge in pure helium (He-DBD) are studied. Different discharge modes of He-DBD are clarified, including filament-diffuse mixed mode, filamentary mode, diffuse mode, and multichannels coupled mode. The transitions of different modes are explored by changing the gap width and applied voltage. According to the luminous structure of discharge [short exposure (100~300 ns) image], it is found that there should be only Townsend-like and glow-like discharges that appear in the above modes. In Townsend-like discharge, the secondary electron emission coefficient (SEEC) of dielectric is estimated. Based on which, a fluid model coupled with an external circuit is built to explain the He-DBD mode transitions mechanism and the applied voltage drop's influence on He-DBD. Through the temporal evolution of a luminous structure, a discharge filament is believed to be a contractive state of discharge channel, which should be an unstable glow-like discharge. The radius of discharge channel, changing with gap width and applied voltage, is measured. The discharge contraction is attributed to the nonlinear relationship between Townsend ionization coefficient and electric field. The enhancing interaction between different discharge channels inhibits the appearing of diffuse discharge around discharge filament, leading to the transition from mixed mode to filamentary mode. In the end, the multichannels coupled mode is proven to be glow-like discharge, and its formation mechanism is explained by the overlap of discharge channels.
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影响因子:
4
作者:
J. Boeuf;B. Bernecker;T. Callegari;S. Blanco;R. Fournier
通讯作者:
J. Boeuf;B. Bernecker;T. Callegari;S. Blanco;R. Fournier
DOI:
10.1088/0022-3700/5/2/037
发表时间:
1972-02
期刊:
Journal of Physics B
影响因子:
--
作者:
J. Howorth
通讯作者:
J. Howorth
DOI:
10.1088/0022-3727/47/36/365204
发表时间:
2014-08
期刊:
Journal of Physics D: Applied Physics
影响因子:
--
作者:
R. Tschiersch;M. Bogaczyk;H. Wagner
通讯作者:
R. Tschiersch;M. Bogaczyk;H. Wagner
影响因子:
3.2
作者:
Brauer, I;Punset, C;Boeuf, JP
通讯作者:
Boeuf, JP
影响因子:
1.5
作者:
Xinxin Song;Z. Tan;Bo Chen
通讯作者:
Xinxin Song;Z. Tan;Bo Chen