Propagation of broadband terahertz pulses through a dense-magnetized-collisional-bounded plasma layer

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3515895· OSTI ID:21532021

Chengxun, Yuan; Zhongxiang, Zhou; Hongguo, Sun; Shaozhi, Pu ^[1]; Xiaoli, Xiang ^[2]

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1. Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (China)
2. Shanghai Academy of Spaceflight Technology, Shanghai 201108 (China)

The terahertz characteristics of a dense-magnetized-collisional-bounded plasma under normal incident are analyzed in this study, which is of practical significance in plasma diagnostics with electromagnetic waves. We theoretically calculate the reflection, absorption, and transmission coefficients for right- and left-handed polarized terahertz waves through a uniform, magnetized, and collisional plasma slab bounded by lossless transparent walls. The power absorption spectra in the frequency range of 0.1-2 THz are given with strong external magnetic fields and different plasma parameters such as plasma density and collisional frequency. Our numerical result is consistent with Jamison's experimental result. It is found that plasma absorption is mainly caused by the collisional absorption and electron cyclotron resonance. Furthermore, the absorption heavily depends on the polarization mode of the terahertz waves when the external magnetic field B is high enough that the election gyrofrequency is near the incident wave frequency. The relationships between the corresponding parameters of the problem are studied numerically.

• OSTI ID: 21532021
• Journal Information: Physics of Plasmas, Vol. 17, Issue 11; Other Information: DOI: 10.1063/1.3515895; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABSORPTION SPECTRA
BOUNDARY LAYERS
COLLISIONAL PLASMA
ELECTROMAGNETIC RADIATION
ELECTRON CYCLOTRON-RESONANCE
MAGNETIC FIELDS
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
TRANSMISSION
WALL EFFECTS
CONFINEMENT
CYCLOTRON RESONANCE
LAYERS
PLASMA
RADIATIONS
RESONANCE
SORPTION
SPECTRA