A comparative study on electromagnetic wave propagation in a plasma sheath based on double parabolic model

Chen, Cong; Shi, Cheng; Zhang, Shi

doi:10.1016/j.ijleo.2017.12.078

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…It is widely used to analyze electromagnetic wave transmission characteristics in plasma, such as through using the Wentzel-Kramer-Brillouin (WKB) method, scattering matrix method (SMM), finite-difference time-domain (FDTD) method. [14][15][16][17][18][19][20][21][22][23][24][25] Yu et al used the WKB method to study the transmission characteristics of terahertz waves in magnetized plasmas with different electron density distributions. [26] Numerical simulation results demonstrated that the plasma density, plasma slab thickness, plasma density models, and collision frequency significantly influence the attenuation and transmittance of terahertz waves.…”

Section: Introductionmentioning

confidence: 99%

Propagation of terahertz waves in nonuniform plasma slab under “electromagnetic window”

Li¹,

Zhang²,

Yang³

2022

Chinese Phys. B

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The application of magnetic fields, electric fields, and the increase of the electromagnetic wave frequency are up-and-coming solutions for the blackout problem. Therefore, this study considers the influence of the external magnetic field on the electron flow and the effect of the external electric field on the electron density distribution, and uses the scattering matrix method (SMM) to perform theoretical calculations and analyze the transmission behavior of terahertz waves under different electron densities, magnetic field distributions, and collision frequencies. The results show that the external magnetic field can improve the transmission of terahertz waves at the low-frequency end. Magnetizing the plasma from the direction perpendicular to the incident path can optimize the right-hand polarized wave transmission. The external electric field can increase the transmittance to some extent, and the increase of the collision frequency can suppress the right-hand polarized wave cyclotron resonance caused by the external magnetic field. By adjusting these parameters, it is expected to alleviate the blackout phenomenon to a certain extent.

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Section: Introductionmentioning

confidence: 99%

Propagation of terahertz waves in nonuniform plasma slab under “electromagnetic window”

Li¹,

Zhang²,

Yang³

2022

Chinese Phys. B

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“…Although some previous studies have claimed to incorporate the effect of the sheath in the simulation of hypersonic flows (see [10,11,12,13]), such used the word sheath loosely to refer to the quasi-neutral plasma layer. If sheath is defined as usual as the non-neutral region near the surface then only one numerical study (outlined in Ref.…”

Section: Introductionmentioning

confidence: 99%

Electron Losses in Hypersonic Flows

Parent,

Rajendran,

Omprakas

2021

Preprint

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The first comprehensive study of electron gains and losses in hypersonic air flows including the full coupling between the non-neutral plasma sheaths and the quasi-neutral plasma flow is here presented. Such is made possible by the use of advanced numerical methods that overcome the stiffness associated with the plasma sheaths. The coupling between the sheaths, the electron temperature in non-equilibrium, and the ambipolar diffusion within the quasi-neutral plasma flow is found to be critical to predict accurately electron losses and, thus, plasma density around hypersonic vehicles. This is because electron cooling coming from the non-neutral sheaths affects significantly electron temperature everywhere in the plasma and, therefore, the electron-temperature-dependent loss processes of ambipolar diffusion and dissociative recombination. Results obtained show that electron loss to the surface due to catalyticity dominates over electron loss within the plasma due to dissociative recombination either (i) at high altitude where the dynamic pressure is low, or (ii) at low Mach number, or (iii) when the vehicle has a sharp leading edge.

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“…Chen Cong et. al., [15] investigated EM-wave characteristics in a plasma sheath forming during spacecraft reentry, where heperbolic plasma density profile is used. Bawaaneh et.…”

Section: Introductionmentioning

confidence: 99%

Forward recursion approach of electromagnetic wave propagation characteristics in a slab of inhomogeneous magnetoplasma

Al‐Khateeb

Khasawneh

Bawa’aneh

2019

AEM

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Propagation characteristics of electromagnetic radiation incident on an inhomogeneous magnetoplasma slab near a good conducting metallic surface is investigated. The inhomogeneous plasma slab is divided into thin layers (sub-cells) in order to allow for treating each plasma sub-cell as a homogeneous medium. A global matrix is formed upon matching the fields at all interfaces, which allows for the analytical determination of the reflection, absorption and transmission coefficients. For matching the tangential fields at the metallic surface, an impedance (Leontovich) boundary condition has been used. Propagation characteristics are calculated numerically for a set of parameters that may be suitable for many applications including stealth plasma. Numerical results show resonant absorption peaks near the electron cyclotron frequency that increase by increasing the equilibrium plasma density. They also show absorption enhancement by increasing the plasma slab width.

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A comparative study on electromagnetic wave propagation in a plasma sheath based on double parabolic model

Cited by 8 publications

References 4 publications

Propagation of terahertz waves in nonuniform plasma slab under “electromagnetic window”

Propagation of terahertz waves in nonuniform plasma slab under “electromagnetic window”

Electron Losses in Hypersonic Flows

Forward recursion approach of electromagnetic wave propagation characteristics in a slab of inhomogeneous magnetoplasma

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