Optical emission behaviors of C,Al, Ti,Fe, Cu,Mo, Ag,Ta, and W wire explosions in gaseous media |
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Authors: | Ruoyu Han Jiawei Wu Aici Qiu |
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Affiliation: | 1. School of Physics, Beijing Institute of Technology, Beijing 100081, China;2. Global Energy Interconnection Development and Cooperation Organization, Beijing 100031, China;3. State Key Laboratory of Electrical Insulation and Power Equipment, Xi''an Jiaotong University, Xi''an 710049, China |
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Abstract: | Electrical explosion of wires (EEW) is a promising method for nanopowders preparation and insensitive explosives ignition. Plasma radiation plays a key role in the ignition process while little attention has been paid on this phenomenon before. This letter introduces optical emission behaviors of electrical explosions for nine materials in air, Helium, and Argon with the SWE-2 platform. Experimental results indicated that the light intensity for non-refractory metals decayed rapidly after the discharge ended. In contrast, for refractory metals, the emission continued to increase and lasted for a long period after the discharge ceased. As for spectra, the emission consisted of line and continuous spectra. With the atomic number increased, the density of lines grew rapidly, leading to a “continuous” appearance. |
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Keywords: | Electrical wire explosion Non-ideal plasmas Spectroscopy Shock waves Metal materials |
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