electron cyclotron resonance
Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
... the electron cyclotron resonance (ECR) re- gion, where the heating radiation is absorbed, is usually ...the electron gyrofrequency, the absorption region is much shorter than the ...
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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, ...
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Electron Energy Loss Spectroscopy of Carbon Films Prepared by Electron Cyclotron Resonance Plasma Sputtering
... While a variety of techniques have been applied to prepare a protective hard carbon film for hard-disks, the physical ori- gins of the mechanical and electrical properties of the films are still not fully understood. In ...
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Efficient Heating at the Third-Harmonic Electron Cyclotron Resonance in the Large Helical Device
... of resonance can be discriminated independently and effectively by the stair-like ...of electron temper- ature measured by Thomson scattering and electron den- sity measured by a far-infrared laser ...
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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 ...
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Observation of Zonal Flow Type Oscillation in Linear Cylindrical ECR Plasmas
... Zonal flow type oscillation, which is driven by a small modulation of the electron cyclotron resonance (ECR) power in a low-frequency band ( < 0.1 kHz), and its impact on drift wave turbulence are ...
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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 ...
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Design and development of the ITER CTS diagnostic
... Abstract. The Collective Thomson Scattering (CTS) diagnostic will be a primary diagnostic for measuring the dynamics of the confined fusion born alpha particles in ITER and will be the only diagnostic for alphas below ...
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Improvement of Ion Confinement in Core Electron-Root Confinement (CERC) Plasmas in Large Helical Device
... with electron cyclotron resonance heat- ing (ECRH), and they are also observed in Large Helical Device (LHD) ...an electron internal transport barrier (electron-ITB) with a steep gradi- ...
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Mitigation of energetic electrons in the magnetosphere by amplified whistler wave under double cyclotron resonances
... 1982; Helliwell, 1983) that trapped energetic (keV) elec- trons in the magnetosphere can significantly amplify whistler waves. The anisotropic relativistic plasma can also excite electromagnetic instability through the ...
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Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X
... MW electron cyclotron resonance heating (ECRH) system allowing at least 30 minutes continuous ...coils, electron cyclotron current drive (ECCD) can be used at W7-X to compensate a ...
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Vertical Electron Cyclotron Emission Diagnostic for TCV Plasmas
... Abstract. Electron cyclotron resonance heating (ECRH) and electron cyclotron current drive (ECCD) are used to heat the plasma, to tailor the current profiles and to achieve dif- ferent ...
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Physics of Heliotron J Confinement
... of electron cyclotron resonance (ECR)/neutral beam injection (NBI)/ion cyclotron range of frequencies (ICRF) heating plasmas have been made for understanding global energy confinement in ...
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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
... in (1): R 1 (ϕ) = a · [1 + h N cos (N ϕ + ϕ N )]. This allows us to exclude the effects of other terms, but there are no fundamental problems associated with considering any finite number of terms from (1) in the studied ...
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Parametric Instability of Surface Electron Cyclotron TM-Modes
... of electron cyclotron frequency due to utilization of an external alternating electric field is under the ...with electron Larmor radius) wavelength range and short wavelength range if an external ...
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Magnetic field turbulence, electron heating, magnetic holes, proton cyclotron waves, and the onsets of bipolar pulse (electron hole) events: a possible unifying scenario
... proton cyclotron waves through the loss cone in- ...proton cyclotron waves accelerate bi-streaming electrons, which are the source of free energy for the electron ...
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Petroleomic depth profiling of Staten Island salt marsh soil : 2ω detection FTICR MS offers a new solution for the analysis of environmental contaminants
... Atmospheric pressure chemical ionization Fourier transform ion cyclotron resonance mass.. spectrometry for complex thiophenic mixture analysis.[r] ...
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Modeling of short scale turbulence in the solar wind
... proton cyclotron resonance and of the magnetosonic waves by the Landau resonance, be- ing strongly k (wave vector) dependent, is quite incapable of producing a power-law spectral distribution of ...
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Radiation transport modelling for the interpretation of oblique ECE measurements
... The ECEI at ASDEX Upgrade [7] consists of two separate imaging diagnostics. Through the usage of two opposite signed toroidal angles the two arrays allow measurements in 3D. Although the toroidal deviation from the ...
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On ion-cyclotron-resonance heating of the corona and solar wind
... In the recent past intensive efforts were made to explain fea- tures of observed solar EUV (extreme ultraviolet) emission lines of heavy ions. The lines provide, through their widths (broadenings or equivalent ion ...
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