Experimental Study of RF–Plasma Interaction Using a Low-Pressure DC Glow Discharge Tube for MPC

This paper aims to perform experimental validation of RF–plasma interaction behaviors for the purposes wave transmission and reflection. Wave reflection from plasma is interest as it finds applications in pulse compression RF polarizer-based systems. Simulations are performed using a combination Magic3D COMSOL multiphysics characterize plasma–wave discharge tube properties. The goal generate with characteristics that wholly reflect incident electromagnetic wave. A glass inner diameter 22 mm length 100 mm, 12 brass electrodes, fabricated generation. Argon-based DC glow sustained at 500 volts pressure 3.8 Torr. Plasma density calculated be 2.529×1019 m−3, corresponding frequency 7.18 GHz. Due this higher frequency, 3 GHz reflected, measured through S-parameter measurements network analyzer. Off on states correspond S11=−40 dB S11=−13 dB, which show reflection, respectively. When column ignited, reflected has phase difference 180∘.