The influence of electric field uniformity on the discharge characters of SF6 mixture

Feng Zhu; Ke Huang; Aiping Yi; Ying Tang; Kunpeng Luan; Songqing Zhou

doi:10.1117/12.2182053

4 May 2015 The influence of electric field uniformity on the discharge characters of SF₆ mixture

Feng Zhu, Ke Huang, Aiping Yi, Ying Tang, Kunpeng Luan, Songqing Zhou

Proceedings Volume 9543, Third International Symposium on Laser Interaction with Matter; 95431H (2015) https://doi.org/10.1117/12.2182053
Event: Third International Symposium on Laser Interaction with Matter, 2014, Jiangsu, China

Abstract

SF₆ and C₂H₆ are the working gas mixture of non-chain HF laser. In our work, we use a simple pumping circuit to study the influence of the electric field uniformity on the discharge characters. Three groups of electrodes with different designs have been manufactured, and different discharge characters have been got. We have analyzed the results qualitatively, and find that without preionization, uniform electric field is not the best choice to form a large volume discharge in strong negative gas such as SF₆-based mixture; approximate uniform electric field may be its substitution. In such electric field the gap breakdown voltage decreases and discharge can perform much easily. The discharge channels away from the cathode surface can also diffuse together to form a large volume discharge to deposit the electric energy into the laser working gas.

Citation Download Citation

Feng Zhu, Ke Huang, Aiping Yi, Ying Tang, Kunpeng Luan, and Songqing Zhou "The influence of electric field uniformity on the discharge characters of SF₆ mixture", Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95431H (4 May 2015); https://doi.org/10.1117/12.2182053

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