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← ScienceWhich effect is worsened when dielectric spacing decreases in resonant cavity waveguides at gigahertz frequencies?
A)Increased multipactor effect electron collisions✓
B)Decreased group velocity dispersion
C)Enhanced nonlinear optical response
D)Reduced ohmic energy dissipation
💡 Explanation
Decreasing dielectric spacing increases the electric field, therefore the multipactor effect becomes problematic because secondary electron emission intensifies, leading to collisions and potentially waveguide breakdown; rather than dispersion reduction, collisions are main concern for functionality.
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