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← ScienceWhich consequence results when strong microwave fields induce electron avalanching in waveguide?
A)Plasma formation shorts the guide✓
B)Increased wall reflectivity reduces VSWR
C)Evanescent modes diminish signal power
D)Group velocity dispersion broadens pulses
💡 Explanation
Plasma forms because intense fields cause impact ionization, initiating electron avalanching within the waveguide. Because the plasma's conductivity grows rapidly, it shorts the guide and disrupts propagation, rather than simply increasing reflection or impacting modes.
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