| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Temperature Characteristics of Cathode Sheath in High-Pressure Volume Discharge Derived from Emanating Shock Wave |
| YANG Chen-Guang, XU Yong-Yue, ZUO Du-Luo* |
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 Institute of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
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| Cite this article: |
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YANG Chen-Guang, XU Yong-Yue, ZUO Du-Luo 2012 Chin. Phys. Lett. 29 125201 |
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Abstract The temperature characteristics of cathode sheath in high-pressure volume discharge are investigated experimentally. The cathode sheath temperatures under various discharge conditions are derived from the speeds of the emanating shock waves which are measured by a Mach–Zehnder interferometry. It is found that the cathode sheath temperature and the ratio ΔT3/ΔT1 of temperature rise between cathode sheath and plasma bulk are determined by the specific energy deposition and the breakdown delay time respectively. These results are helpful for discharge stability improving and shock wave reducing.
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Received: 09 April 2012
Published: 04 March 2013
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| PACS: |
52.80.Hc
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(Glow; corona)
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52.40.Hf
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(Plasma-material interactions; boundary layer effects)
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42.55.Lt
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(Gas lasers including excimer and metal-vapor lasers)
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