Effects of Magnetized Thermal Plasma on The Propagation Properties of THz Waves

2018 ◽  
Author(s):  
Weizhong Yan ◽  
Xudong Bai ◽  
Fanwei Kong ◽  
Yuntao Sun ◽  
Pengcheng Hu ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Propagation Properties ◽  
Thz Waves

scholarly journals Effects of magnetized plasma on the propagation properties of obliquely incident THz waves

AIP Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 125325 ◽  
Author(s):  
Yunxian Tian ◽  
Weizhong Yan ◽  
Xiaoliang Gu ◽  
Xiaolin Jin ◽  
Jianqing Li ◽  
...  
Keyword(s):  
Magnetized Plasma ◽  
Obliquely Incident ◽  
Propagation Properties ◽  
Thz Waves

scholarly journals Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 263
Author(s):  
Qingwen Rao ◽  
Guanjun Xu ◽  
Pengfei Wang ◽  
Zhengqi Zheng
Keyword(s):  
Dusty Plasma ◽  
Dust Particle ◽  
Matrix Method ◽  
Collision Frequency ◽  
Scattering Matrix ◽  
Ceramic Substrate ◽  
Propagation Characteristics ◽  
Propagation Properties ◽  
Scattering Matrix Method ◽  
Thz Waves

The propagation characteristics of terahertz (THz) waves incident vertically into inhomogeneous and collisional dusty plasma with a ceramic substrate are studied using the scattering matrix method (SMM). The effects of the incident wave frequency and plasma parameters, such as the maximal electron density, dust particle density, dust particle radius and collision frequency, on the reflectance and transmittance of THz waves in the dusty plasma are discussed. In addition, the differences of the propagation properties in the dusty plasma, with and without ceramic substrate, are analyzed. Meanwhile, the differences of the propagation properties in dusty plasma and common plasma, respectively, with ceramic substrate are also compared. Simulation results show that the substrate and dust particles have significant influence on the propagation characteristics of THz wave in plasma sheath. Finally, the transmission increases with the increase of electron density, dust density, dust particle radius and collision frequency.

CONTACT METHODS FOR DIAGNOSTICS OF THERMAL PLASMA

1990 ◽  
Vol 51 (C5) ◽  
pp. C5-281-C5-288
Author(s):  
P. Lj. STEFANOVIj ◽  
P. B. PAVLOVIj ◽  
M. M. JANKOVIj ◽  
S. N. OKA
Keyword(s):  
Thermal Plasma

Material Structure of Microcrystalline Silicon Deposited with an Expanding Thermal Plasma

2003 ◽  
Vol 762 ◽  
Author(s):  
C. Smit ◽  
D.L. Williamson ◽  
M.C.M. van de Sanden ◽  
R.A.C.M.M. van Swaaij
Keyword(s):  
Thermal Plasma ◽  
Hydrogen Plasma ◽  
Plasma Chemistry ◽  
Plasma Source ◽  
Growth Direction ◽  
Interaction Time ◽  
Material Structure ◽  
Average Particle ◽  
Microcrystalline Silicon ◽  
X Ray

AbstractExpanding thermal plasma CVD (ETP CVD) has been used to deposit thin microcrystalline silicon films. In this study we varied the position at which the silane is injected in the expanding hydrogen plasma: relatively far from the substrate and close to the plasma source, giving a long interaction time of the plasma with the silane, and close to the substrate, resulting in a short interaction time. The material structure is studied extensively. The crystalline fractions as obtained from Raman spectroscopy as well as from X-ray diffraction (XRD) vary from 0 to 67%. The average particle sizes vary from 6 to 17 nm as estimated from the (111) XRD peak using the Scherrer formula. Small angle X-ray scattering (SAXS) and flotation density measurements indicate void volume fractions of about 4 to 6%. When the samples are tilted the SAXS signal is lower than for the untilted case, indicating elongated objects parallel to the growth direction in the films. We show that the material properties are influenced by the position of silane injection in the reactor, indicating a change in the plasma chemistry.

THERMAL PLASMA GASIFICATION OF BIOMASS FOR FUEL GAS PRODUCTION

2009 ◽  
Vol 13 (3-4) ◽  
pp. 299-313 ◽  
Author(s):  
Milan Hrabovsky ◽  
M. Hlina ◽  
M. Konrad ◽  
Vladimir Kopecky ◽  
T. Kavka ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Gas Production ◽  
Fuel Gas ◽  
Plasma Gasification
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