Transient Analysis of Absorption Characteristics of Argon Plasma Column Array Under High-Power Microwave Irradiation

This article mainly focuses on the absorption properties of microwave plasma. Based on the plasma fluid method, plasma column array structures are proposed to study the transmission of high-power microwave (HPM) pulses. The damping effect of the plasma column array on HPM with different plasma column gap widths, different plasma column radius lengths and a double-layer plasma column array in combination with an absorbing material structure is investigated. The physical process and mechanism of plasma shielding effect on high-power microwaves are determined. The results suggest that large gaps between the plasma columns weaken the absorption and reflection of electromagnetic (EM) waves by the plasma column array. Increasing the plasma column radius can improve the absorption and reflection of EM waves and realize the limiting function. In addition, the double-layer plasma column array structure combined with absorbing material can prevent the loss of EM waves and optimally achieve the EM wave absorption effect. This study can provide more effective guidelines for microwave protection applications.