Abstract
This paper presents a new composite grid electrode structure for the generation of plasma that is suitable for modeling microwave radiation transmission through atmospheric plasma. The new grid anode-composite cathode (GA-CC) structure is to be contrasted with the ordinary grid anode-cathode plate (GA-CP) structure. It is found that the breakdown voltage of the new GA-CC electrode structure is lower than that of the GA-CP structure and is a bit shifted to the right on the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Pd</i> -axis. An advantage of the GA-CC structure over the GA-CP structure is that it requires a lower voltage to generate the same current. It is found that plasma generated by the new GA-CC structure selectively strengthens electromagnetic waves attenuation in the frequency range of 9–12 GHz.
Highlights
The propagation of electromagnetic waves in plasma is attracting increased interest among researchers [1]–[5]
The experimental data obtained with this Keysight Vector Network Analyzer were processed to characterize the transmission of plasma generated by a new discharge device with an electrode structure consisting of a grid anode and a composite cathode
Paschen curves and current-voltage characteristics of discharges in these electrode structures as well as attenuation of microwave radiation by a post-anode plasma generated in these two electrode structures, were studied for different lengths of the electrode gap
Summary
The propagation of electromagnetic waves in plasma is attracting increased interest among researchers [1]–[5]. This paper presents experimental results of studying characteristics of large-area planar plasmas generated with our new electrode structure and a conventional DC grid structure.
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