High-power microwave propagation properties in the argon plasma array

Liu, Yang; Shi, Junbo; Li, Cheng; Wang, Jiachun; Yuan, Zhiyong; Chen, Zongsheng

doi:10.1088/2058-6272/aae369

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…Han et al [3]studied the reflection, absorption and transmission of waveguide plasma limiter. Liu et al [4] studied the characteristics of the interaction between L-band HPM and Ar plasma theoretically and experimentally. The results showed that HPM attenuation of the plasma array is about 23 dB for the L-band.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Wang

Liao

Yuan

et al. 2023

Advanced Fiber Laser Conference (AFL2022)

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Aiming at the "front door" protection problem of radar system, a waveguide plasma limiter with short response time, short recovery time and high isolation is presented based on the reflection and absorption characteristics of electromagnetic wave for high-power microwave (HPM) environment. A self-consistent three-dimensional (3-D) multiphysics electromagnetic-plasma fluid model coupling full-wave Maxwell's equations with plasma fluid equations is established and solved by the spectral-element time-domain (SETD) method to describe the operating mechanism of the waveguide plasma limiter. The Galerkin's method is employed for the space discretization and the central difference scheme is used for the temporal discretization during the SETD process. Numerical results demonstrate that the gas with low critical breakdown field strength is more suitable for protecting high-power microwaves. Our research can provide theoretical guidance for designers and give the complete physical process of plasma limiter.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Wang

Liao

Yuan

et al. 2023

Advanced Fiber Laser Conference (AFL2022)

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“…Low-pressure Mercury vapor discharge plasma has the advantages of low power consumption, large amount of generated plasma, long-term stable maintenance, mature technology, and low cost. Further, such plasma has been widely used in research focusing on the interaction between plasma and electromagnetic waves [17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, in studies on the interaction between low-pressure Mercury vapor discharge plasma tubes and electromagnetic waves, plasma structure forms include one-dimensional (1D) [17][18][19][20][21][22][23] and two-dimensional (2D) plasma tube arrays [24][25][26]. The main factor investigated is discharge current (power) [21,22,[24][25][26]; changing the discharge current can regulate the effect of the plasma on the electromagnetic wave.…”

Section: Introductionmentioning

confidence: 99%

“…Tan [19] used 15-mm-diameter discharge plasma tubes filled with argon and Mercury to form a 1D array; the normal-incidence TM wave had an obvious low-frequency cutoff and band gap movement; however, the TE wave had no such cutoff, and the attenuation band appeared at low frequencies. Liu et al [20] used a plasma array comprised of discharge tubes filled with 3 Torr argon with a diameter of 25.4 mm to investigate the effect of the tube array on the transmission characteristics of L / C-band high power microwaves. They found that the TE wave transmission attenuation was stronger than the TM wave.…”

Section: Introductionmentioning

confidence: 99%

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Factors influencing the electromagnetic transmission of mercury vapor discharge plasma tube arrays

Liu

Peng

Lin³

et al. 2023

Phys. Scr.

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Low-pressure mercury vapor discharge plasma tubes were used to form arrays to control electromagnetic transmission. The internal and external factors influencing a discharge tube array were adjusted to expand the electromagnetic wave manipulation ability. The plasma electron density (ne) is the key parameter for electromagnetic wave manipulation. Microwave transmission was used to diagnose ne under different working conditions. Simulations and electromagnetic transmission measurements were used to investigate the behavior of the effect of internal and external factors on electromagnetic transmission. Simulation results indicated that increasing ne increased the attenuation, widened the attenuation bandwidth, and shifted the attenuation band to higher frequencies. The experimental results showed that increasing the discharge power significantly increased ne and widened the strong attenuation frequency band. ne first increased and then decreased when the gas pressure was increased. The tube diameter affected both ne and the plasma layer thickness, and the attenuation band of the plasma tube array moved to a low frequency with an increase in tube diameter. The primary and secondary order of the influence of external factors other than power on the attenuation bandwidth obtained via an orthogonal experiment is as follows: gas composition > tube diameter > pressure. The maximum attenuation bandwidth for 10 dB attenuation was 9.85 GHz. The results show that the attenuation control ability of the plasma tube array can be significantly improved by adjusting the external factors of the plasma tube.

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“…The gas breakdown driven by high-power microwaves has been studied extensively because of its applications in highpower microwave systems, material processing, rocket propulsion, medical treatment, and so on [1][2][3][4][5][6][7][8][9][10][11]. Gas breakdown by microwave in the millimeter regime was paid more and more attention in recent years, due to the development of high-power millimeter wave radiation sources [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Dependence of plasma structure and propagation on microwave amplitude and frequency during breakdown of atmospheric pressure air

Zhao¹,

Chang²,

Shu³

et al. 2021

Plasma Sci. Technol.

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The structure and propagation of the plasma in air breakdown driven by high-power microwave have attracted great interest. This paper focuses on the microwave amplitude and frequency dependence of plasma formation at atmospheric pressure using one two-dimensional model, which is based on Maxwell's equations coupled with plasma fluid equations. In this model, we adopt the effective electron diffusion coefficient, which can describe well the change from free diffusion in a plasma front to ambipolar diffusion in the bulk plasma. The filamentary plasma arrays observed in experiments are well reproduced in the simulations. The density and propagation speed of the plasma from the simulations are also close to the corresponding experimental data. The size of plasma filament parallel to the electric field decreases with increasing frequency, and it increases with the electric field amplitude. The distance between adjacent plasma filaments is close to one-quarter wavelength under different frequencies and amplitudes. The plasma propagation speed shows little change with the frequency, and it increases with the amplitude. The variations of plasma structure and propagation with the amplitude and frequency are due to the change in the distribution of the electric field.

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High-power microwave propagation properties in the argon plasma array

Cited by 8 publications

References 20 publications

Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Factors influencing the electromagnetic transmission of mercury vapor discharge plasma tube arrays

Dependence of plasma structure and propagation on microwave amplitude and frequency during breakdown of atmospheric pressure air

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