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Use of Plasma to Protecting Against High Power Microwave

Author: YangGeng
Tutor: TanJiChun
School: National University of Defense Science and Technology
Course: Optics
Keywords: High Power Microwave Weapon protection Plasma limiter sandwich-window cascade
CLC: O539
Type: Master's thesis
Year: 2007
Downloads: 123
Quote: 0
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Abstract


To protect military electronic systems against High Power Microwave Weapons (HPMW), plasma protective technology is researched. This paper is organized as follows:A new method of Plasma protection, including waveguide Plasma limiter and sandwich Plasma protective window, is presented based on potential advantages of Plasma to protecting military electronic systems against HPMW. Cascade protective device is also proposed to improve the protective performance.1. Waveguide Plasma limiter is presented to protecting against HPMW with lower frequency. Gas breakdown electric field intensity and breakdown time of the limiter are numerical analyzed based on typical parameters of waveguide. Option of gas parameters and feasibility of the limiter to protecting military electronic systems against HPMW are discussed in detail. The results show: limiter filled with Xe of 1 torr can be charged by HPM in approximately 14 ns, and protects electronic systems.2. According to the experiment results, sandwich Plasma protective window is presented. Ratio between transmitted power propagating through the window and original power of the HPMW is numerical analyzed, and feasibility of the window to protecting military electronic systems against HPMW is discussed in detail. The results show: incident HPM could be attenuated by the plasma window, and the ratio is 0.3%～2.7%.3. Cascade protective device is presented to solving the problem, that Plasma limiter and sandwich Plasma protective window would induce leakage while hardening against HPMW, and Protective performance is numerical analyzed. The results show: leakage power induced by Waveguide Plasma limiter could be suppressed below 0.4 W by cascade protective measurement.

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CLC: > Mathematical sciences and chemical > Physics > Plasma physics > The application of plasma physics
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