Transmission characteristics of terahertz waves propagation in magnetized plasma using the WKB method

Yu, Huan; Xu, Guanjun; Zheng, Zhengqi

doi:10.1016/j.ijleo.2019.05.061

Cited by 26 publications

(9 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, a larger TEC induces a small

and a slightly large

. The regulation of EM wave transmission and reflection in Figure 4 is not contradictory to results in other studies [ 29 ].…”

Section: Resultssupporting

confidence: 56%

Detection of the Lunar Surface Soil Permittivity with Megahertz Electromagnetic Wave

Rao

Mao

2021

Sensors

Self Cite

View full text Add to dashboard Cite

In this paper, the detection of the lunar surface soil permittivity with megahertz electromagnetic (EM) waves by spaceborne radar is studied based on the EM scattering theory, the Boltzmann–Shukla equations, and the improved scattering matrix method (ISMM). The reflection characteristics of the lunar surface soil subject to megahertz waves are analyzed through the EM scattering theory and expressed by the lunar surface soil permittivity. Then, the lunar ionosphere is assumed to be composed of dusty plasma, and its EM characteristics are described with the Boltzmann–Shukla equations. Finally, the transmission and reflection characteristics of the propagation of EM waves in the lunar ionosphere are numerically calculated with ISMM. Thus, the complex permittivity of lunar surface soil is obtained. In addition, the effects of detection environment situations, such as the lunar illumination intensity, characteristics of the lunar dust and dust charging process in the lunar ionosphere, on the amplitude and phase of EM waves are also investigated in this study. The simulation results show that an EM wave at a high frequency induces a strong effective wave with a stable phase shift and a significantly small interferential wave. Moreover, the lunar illumination is more effective under EM waves in low frequency bands; the characteristics of the lunar dust have a notable influence on the transmission and absorption coefficients of the effective waves. These conclusions help in real applications involving the detection of the lunar surface soil permittivity by spaceborne radar in various lunar environments.

show abstract

“…Therefore, a larger TEC induces a small

and a slightly large

. The regulation of EM wave transmission and reflection in Figure 4 is not contradictory to results in other studies [ 29 ].…”

Section: Resultssupporting

confidence: 56%

Detection of the Lunar Surface Soil Permittivity with Megahertz Electromagnetic Wave

Rao

Mao

2021

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…So far, due to the high-pass filtering property of plasma, widely accepted has been the scheme of transmitting information by terahertz waves as carriers (Yuan et al 2017;Liu et al 2021). Yu et al used the Wenzel-Kramers-Brillouin approximation to study the transmission characteristics of terahertz waves in plasma with different electron density distributions (Yu, Xu & Zheng 2019). Liu et al constructed the Runge-Kutta exponential time finite-difference time-domain method to study the propagation characteristics of terahertz waves in cold magnetized plasma (Liu & Chao 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Yu et al. used the Wenzel–Kramers–Brillouin approximation to study the transmission characteristics of terahertz waves in plasma with different electron density distributions (Yu, Xu & Zheng 2019). Liu et al.…”

Section: Introductionmentioning

confidence: 99%

A study of the transmission characteristics of terahertz waves in hypersonic target flow field

Zhang

Han²,

Zhao³

et al. 2022

J. Plasma Phys.

View full text Add to dashboard Cite

Based on the chemical reaction model proposed by Park, the ‘blackout’ of a reentry vehicle is studied in this paper. The temperature, pressure and electron density distribution characteristics around the reentry vehicle were simulated at various flight speeds and altitudes by USim. Subsequently, the scattering matrix method was used to study the transmission characteristics of terahertz waves in ‘blackout’. The simulation results show that the temperature around the aircraft is mainly affected by speed, the pressure is mainly affected by the altitude and electron density is affected by both of these factors. The calculation results show that the transmission characteristics of terahertz waves in plasma are mainly affected by electron density, while the effects of temperature and pressure cannot be ignored either.

show abstract

“…Sometimes referred to as the Liouville-Green transformation, the WKB method is a powerful technique for finding approximate solutions to time-independent linear ODEs with spatially varying coefficients [10,11]. Although historically applied to semiclassical problems in quantum mechanics [12][13][14], the WKB method also boasts applications in diverse physical phenomena, including but not limited to wave optics, ocean waves, atmospheric waves, radio waves, and plasma waves [15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Perturbed potential temperature field in the atmospheric boundary layer

Karjanto

2022

Z Angew Math Mech

View full text Add to dashboard Cite

This article discusses the modeling of perturbed potential temperature field in an atmospheric boundary layer (ABL). We adopt a convection–diffusion model with specified initial and boundary conditions that resulted from simplifying the linearized equation of the standard continuity equation for potential temperature field in the state of weak turbulent fluxes. By implementing the method of separation of variables to the nonsteady‐state perturbed potential temperature, we obtain a regular Sturm–Liouville boundary value problem (BVP) for the spatial‐dependent, vertical distribution component of the perturbed potential temperature. By transforming the problem in the canonical form into the Liouville normal form, we provide asymptotic solutions for the corresponding second‐order BVP using the Wentzel–Kramers–Brillouin (WKB) theory. We further observe a remarkable qualitative agreement between the asymptotic solutions and numerical simulations. As other convection–diffusion models typically perform, the perturbed potential temperature diminishes and approaches the steady‐state condition over an extended period of time.

show abstract

Transmission characteristics of terahertz waves propagation in magnetized plasma using the WKB method

Cited by 26 publications

References 20 publications

Detection of the Lunar Surface Soil Permittivity with Megahertz Electromagnetic Wave

Detection of the Lunar Surface Soil Permittivity with Megahertz Electromagnetic Wave

A study of the transmission characteristics of terahertz waves in hypersonic target flow field

Perturbed potential temperature field in the atmospheric boundary layer

Contact Info

Product

Resources

About