提出一种新型的放电电极，采用表面滑闪预电离方式，解决脉冲氧碘化学激光器的稳定均匀放电问题.采用该放电电极，对碘甲烷和氮气混合气体进行放电.在放电截面为11 cm×10cm，腔体压力为2.8～3.3KPa情况下，得到稳定均匀的辉光放电，电能量注入达4.5 J/L.该放电电极构造新颖，在理论上,该放电电极可以在更大放电截面上取得良好的放电结果.
Abstract
A novel electrode system with the assistance of surface sliding preionization was applied to improve the stability of the glow discharge with large aperture. The preionization unit was symmetrically fixed on the plane of cathode surface. A uniform and stable glow discharge was obtained in the mixture of iodide and nitrogen at the specific energy deposition of 4.5 J/L, pressure of 2.8～3.3 kPa, aperture size of 11 cm×10 cm. In theory, the electrode system is applicable in glow discharge with even larger aperture due to its unique preionization structure.
关键词
氧碘化学激光器 /
脉冲氧碘化学激光器 /
放电电极 /
表面滑闪 /
预电离
Key words
chemical oxygen iodine lasers /
pulsed chemical oxygen iodine lasers /
discharge electrode /
surface sliding /
preionization
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参考文献
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［5］ LI Guo-fu, YU Hai-jun, DUO Li-ping, et al. Pulse operation of chemical oxygen-iodine laser by pulsed gas discharge with the assistance of spark preionization［J］.Chinese Physics Letters, 2009,26(11):114201.
基金
国家高技术研究发展（863）计划(2011AA8027038)
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