Wave propagation in one‐dimensional inhomogeneous random media with an application to lower hybrid waves in fusion plasmas

1990 ◽  
Vol 2 (7) ◽  
pp. 1535-1544 ◽  
Author(s):  
Renato Spigler ◽  
William Grossmann
Keyword(s):  
Wave Propagation ◽  
Random Media ◽  
Lower Hybrid ◽  
Fusion Plasmas ◽  
One Dimensional ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

On the dependence of the efficiency of lower-hybrid current drive on the wave spectrum

1989 ◽  
Vol 42 (1) ◽  
pp. 1-12
Author(s):  
Aldo Nocentini
Keyword(s):  
Electric Field ◽  
Simple Formula ◽  
Wave Spectrum ◽  
Current Drive ◽  
Lower Hybrid ◽  
One Dimensional ◽  
Lower Hybrid Current Drive ◽  
Hybrid Waves ◽  
Lower Hybrid Waves ◽  
Kinetic Treatment

The dependence of the efficiency of current drive by lower-hybrid waves on the shape and intensity of the wave spectrum is discussed in the case where no d.c. electric field is present. The discussion is based on a simple formula arising from a one-dimensional kinetic treatment of the problem.

Plasma Production and Wave Propagation in a Plasma Source Using Lower Hybrid Waves

1999 ◽  
Vol 38 (Part 1, No. 7B) ◽  
pp. 4351-4356 ◽  
Author(s):  
Tetsuo Kikuchi ◽  
Keitaro Ohnishi ◽  
Yasuyoshi Yasaka ◽  
Kunihide Tachibana ◽  
Tohru Itoh
Keyword(s):  
Wave Propagation ◽  
Plasma Source ◽  
Lower Hybrid ◽  
Plasma Production ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

scholarly journals Excitation of Lower-Hybrid Waves by a Slow-Wave Structure

1975 ◽  
Vol 34 (3) ◽  
pp. 124-127 ◽  
Author(s):  
P. Bellan ◽  
M. Porkolab
Keyword(s):  
Slow Wave ◽  
Wave Structure ◽  
Slow Wave Structure ◽  
Lower Hybrid ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

scholarly journals Anomalous Anderson localization behavior in gain-loss balanced non-Hermitian systems

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 443-452
Author(s):  
Tianshu Jiang ◽  
Anan Fang ◽  
Zhao-Qing Zhang ◽  
Che Ting Chan
Keyword(s):  
Wave Propagation ◽  
Electromagnetic Waves ◽  
Anderson Localization ◽  
Random Media ◽  
Normal Incidence ◽  
Disordered Media ◽  
One Dimensional ◽  
Gain Loss ◽  
The Waves ◽  
Localization Behavior

AbstractIt has been shown recently that the backscattering of wave propagation in one-dimensional disordered media can be entirely suppressed for normal incidence by adding sample-specific gain and loss components to the medium. Here, we study the Anderson localization behaviors of electromagnetic waves in such gain-loss balanced random non-Hermitian systems when the waves are obliquely incident on the random media. We also study the case of normal incidence when the sample-specific gain-loss profile is slightly altered so that the Anderson localization occurs. Our results show that the Anderson localization in the non-Hermitian system behaves differently from random Hermitian systems in which the backscattering is suppressed.

Production of plasma vortices by lower-hybrid waves

1981 ◽  
Vol 26 (2) ◽  
pp. 359-367 ◽  
Author(s):  
M. Y. Yu ◽  
P. K. Shukla ◽  
H. U. Rahman
Keyword(s):  
Plasma Heating ◽  
Finite Amplitude ◽  
Current Drive ◽  
Lower Hybrid ◽  
Magnetic Fluctuations ◽  
Field Diffusion ◽  
Modulational Instabilities ◽  
Hybrid Waves ◽  
Plasma Vortices ◽  
Lower Hybrid Waves

Nonlinear excitation of electrostatic and magnetostatic zero-frequency modes by finite-amplitude lower-hybrid waves is considered. It is found that modulational instabilities can give rise to enhanced plasma vortices. Dispersion relations, as well as analytical expressions for the growth rates, are obtained. The enhanced vortices may cause anomalous cross-field diffusion which can affect plasma confinement in tokamak devices when lower-hybrid waves are used for plasma heating or current drive. We found that magnetic fluctuations associated with the parametrically driven magnetostatic mode are of particular importance in tokamak plasmas.

scholarly journals Lower hybrid waves at the magnetosheath separatrix region

2020 ◽  
Author(s):  
Binbin Tang ◽  
Wenya Li ◽  
Daniel Bruce Graham ◽  
Chi Wang ◽  
Yuri V. Khotyaintsev ◽  
...  
Keyword(s):  
Lower Hybrid ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

Experimental study of non-thermal electron generation by lower hybrid waves in the ASDEX tokamak

1986 ◽  
Vol 26 (8) ◽  
pp. 1106-1111 ◽  
Author(s):  
R. Bartiromo ◽  
M. Hesse ◽  
F.X. Söldner ◽  
R. Burhenn ◽  
G. Fussmann ◽  
...  
Keyword(s):  
Experimental Study ◽  
Lower Hybrid ◽  
Thermal Electron ◽  
Electron Generation ◽  
Hybrid Waves ◽  
Lower Hybrid Waves
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