Dielectric breakdown characteristics of a high current metal vapor plasma |
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| Institution: | 1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Jiading District, Shanghai 201800, PR China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Shijinshan District, Beijing 100049, PR China;3. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Changning District, Shanghai 200050, PR China;4. Fujian Key Laboratory of Highly-reliable Capacitors and Ceramic Materials, 4 Zihua Road, Licheng District, Quanzhou 362000, Fujian Province, PR China;1. Department of Engineering Mechanics, Hohai University, Nanjing 211100, PR China;2. Institute for Research and Development, Duy Tan University, Da Nang City, Viet Nam;3. Department of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1-W8-22, Ookayama, Meguro-ku, Tokyo 152-8552, Japan;1. Department of Physics, DIT University, Dehradun, Uttarakhand, 248009, India;2. Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248007, Uttarakhand, India;3. Department of Physics, Doon University, Dehradun, Uttarakhand, 248009, India;4. Department of Physics, IIT Delhi, New Delhi, 110016, India;1. Department of Physics, University of Tehran, North-Kargar Street, Tehran, Iran;2. SUPA and Institute of Thin films, Sensors and Imaging, University of The West of Scotland, High Street, Paisley, UK;1. School of Electrical and Electronic Engineering, University of Manchester, Sackville Street, Manchester M13 9PL, UK;2. Corrosion & Protection Centre, School of Materials, University of Manchester, The Mill, Sackville Street, Manchester M13 9PL, UK;3. School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK |
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| Abstract: | Time- and spatially-resolved spectroscopy is used to study the early-time spectral features of the plasmas produced by high-current, capacitive discharges through thin silver films. Spectra are compared for several support gases including CO2, He, and an Ar/O2 mixture. All measurements were made during the first 40 μs of the discharge. At atmospheric pressure for all three gases, spectra from support gas species show intense lines for only a brief interval between 10 and 30 μs after the start of the discharge. Greatest intensity from silver lines always occurs at the film surface; while greatest intensity from support gas species occurs about 2.0 mm from the film surface. A magnetic field of a few kG normal to the electric field in the plasma and parallel to the thin film surface almost completely eliminates spectral lines from the support gas species. |
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