Antenna impedance measurements in a magnetized plasma. II. Dipole antenna

摘要: This paper presents experimental impedance measurements of a dipole antenna immersed in magnetized plasma. The was derived from the magnitude and phase reflected power using network analyzer over frequency range 1MHz–1GHz. plasma density varied between 107and1010cm−3 weakly (ωce ωpe) plasmas Space Physics Simulation Chamber at Naval Research Laboratory. Over this conditions wavelength varies short limit (λ≫L) to long (λ∼L). As with previous measurements, there are two resonant frequencies observed as where is real. Measurements have indicated that majority deposition takes place lower resonance which lies cyclotron upper hybrid frequency. These measured curves agree very well analytic theory for i...