Plasma Resonators and Waveguides
If a plasma is enclosed in a chamber with highly conducting walls stationary oscillations (standing waves) can be established in it. To establish standing waves it is necessary to satisfy the condition of resonance: the propagation time of the wave must be an exact multiple of the oscillation period. The vessel (enclosed on all sides) in which the condition of resonance is satisfied in all directions is called a resonator. A long resonator with open ends is called a waveguide; these are traveling waves in the axial direction, but standing waves in the perpendicular direction. The resonance condition is only satisfied in the transverse direction in a waveguide.
KeywordsResonant Frequency Circular Polarization Variable Magnetic Field Acoustic Resonance Radial Electric Field
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