electron cyclotron resonance waves
Electron cyclotron heating and current drive using the electron Bernstein modes
... cold resonance it first encounters and the dispersion curve is plotted for ...the waves travelling from low field to high field, but a wave approaching a cyclotron harmonics from the ”right hand ...
126
Influence of the Plasma Column Cross-Section Non-Circularity on the Excitation of the Azimuthal Surface Waves in Electron Cyclotron Frequency Range by Annular Electron Beam
... The initial stage of the resonance beam-plasma instability of LF ASW propagating along a plasma column interface with a noncircular shape of its cross-section has been studied. The noncircular shape of the plasma ...
15
Numerical study of electrostatic electron cyclotron harmonic waves due to Maxwellian ring velocity distributions
... upper-hybrid resonance frequency of cold electrons, the density ratio of cold-to-hot electrons is an important ...ECH waves inside the plasmapause and plasma- sphere would be different from those outside ...
6
Mode Purity of Electron Cyclotron Waves after Their Passage through the Peripheral Plasma in the Large Helical Device
... with Electron Cy- clotron Waves (ECWs) must be done with minimal stray power, because even only a few percent of the input power can damage the vacuum vessel, diagnostic instruments, and heating devices due ...
5
Progress of ECRH by EBW in over-dense plasmas and controlling the confinement regime by ECCD with high power launching in LHD
... the electron density at the electron cyclotron resonance (ECR) layer exceeds the cutoff density of the electron cyclotron (EC) wave in high density operations and in such ...
7
A gyrokinetic analysis of electron plasma waves at resonance in magnetic field gradients
... propagating waves can be ...of cyclotron damping by the background plasma or equivalently, mode coupling to cyclotron harmonic waves (Cairns and Lashmore-Davies (1982)) supported by the ...
127
Mitigation of energetic electrons in the magnetosphere by amplified whistler wave under double cyclotron resonances
... Whistler waves can be ducted in an L-shell of the magne- tosphere to continuously interact with the energetic electrons trapped in the same ...duced electron precipitation (Voss et ...whistler waves ...
10
Study of Optical Properties of Tokamak Plasma
... of electron-cyclotron (EC) waves is nowadays a well-established method for coupling energy to plasma electrons in modern fusion devices, with primary applications the plasma heating (ECRH) and the ...
5
Top Launch for Higher Off-axis Electron Cyclotron Current Drive Efficiency
... using electron cyclotron waves [7] does not require the antenna structures be placed near the plasma since the waves propagate in ...to electron trapping in the magnetic ...primary ...
6
Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
... quasi-optical directional coupler recorded during one of the L-2M discharges. The backscattered signal was recorded using the homodyne detection scheme. By turn- ing the receiving rectangular waveguide by π/2, two mu- ...
5
Efficient Heating at the Third-Harmonic Electron Cyclotron Resonance in the Large Helical Device
... trapped electron con- tributions. Extraordinary-mode waves are assumed to be injected from the upper-port antenna with a frequency of ...obtained electron temperature and density pro- files which are ...
5
Verification of Polarization Reversal of Electromagnetic Waves with Electron Cyclotron Frequency Controlling Plasma-Structure Formation
... the waves exhibit interest- ing physics and a ff ord possibilities for wide-range appli- ...electromagnetic waves with an electron cyclotron resonance (ECR) frequency have attrac- tive ...
9
Electrostatic electron cyclotron harmonic waves observed by the Akebono satellite near the equatorial region of the plasmasphere
... ESCH waves is observed at all mag- netic local times, at magnetic latitude up to 45 ◦ off the mag- netic equator (Fredericks and Scarf, 1973), and at a wide L-shell range of 4–12 (Roeder and Koons, ...ESCH ...
17
Spherical Microwave Confinement and Ball Lightning
... The pressure chamber is an aluminum sphere. Spheres and hemispheres in the U.S. are available in stock sizes graduated in inches; custom sizes require substantial cost for tooling. The nearest size to the 21.5 inch ...
219
Recent Progress of 2MW 140GHz ECRH System on HL-2A
... new electron cyclotron resonance heating and current drive (ECRH/ECCD) launcher system has been designed and installed on the HL-2A tokamak to inject four beams and enable continuous millimeter-wave ...
6
Fast particle driven ion cyclotron emission (ICE) in tokamak plasmas and the case for an ICE diagnostic in ITER
... space dimension, which track full orbits of ions and treat electrons as a neutralizing fluid, have been used to explore the later stages of the MCI [24], thereby providing a more exact comparison with measured ICE ...
7
Single-cavity gyromultipliers
... The LF wave in a gyromultipler may either be induced internally or injected externally. A self-exciting gyro-multiplier, which needs no external RF source, can be often more attractive at short wavelengths. In such a ...
21
Design and Research of Electron Cyclotron Resonance Heating and Current Dive System on HL-2M Tokamak
... Abstract. A research has been conducted to develop an 8MW electron cyclotron resonance heating and current drive (ECRH/ECCD) system on HL-2M tokamak. The ECRH system compromise eight 1MW gyrotrons, ...
5
Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X
... Fig. 11 shows a conducted scenario, where the plasma was ignited by 2 on-axis gyrotrons followed by a switch to 3 off-axis gyrotrons with a deposition radius of r/a = 0.4. Additionally, the power of each gyrotron was ...
6
Improvement of Ion Confinement in Core Electron-Root Confinement (CERC) Plasmas in Large Helical Device
... (a) Electron temperature profiles, (b) ion temperature pro- files, and (c) toroidal rotation velocity profiles, with and without ECRH superposition to the plasmas heated with both the counter-NBI (BL2) and the ...
5