Numerical Study of Instabilities Induced by Sheet Electron Beam on Corrugated Metal Plate
スポンサーリンク
概要
- 論文の詳細を見る
It has been confirmed that the normal mode of a surface wave on a corrugated metal plate can be excited by a sheet electron beam. Two types of instabilities are analyzed numerically. One is the Cherenkov instability between the surface normal mode and the slow-space-charge mode of the electron beam. This instability is possibly absolute instability. The oscillation frequency of this instability can be controlled by the amplitude of the corrugation depth. The electron beam energy for this instability is determined by the ratio of the period length and the amplitude of the corrugation. Another is the Smith–Purcell-type instability. This instability is always convective-type instability. The oscillation frequency is higher than that of the above-mentioned Cherenkov instability and is in a broad band. The temporal growth rate of this instability is strongly reduced as the beam energy is reduced.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-09-15
著者
-
WATANABE Tsuguhiro
National Insitute for Fusion Science
-
Ogura Kazuo
Graduate School Of Science And Technology Niigata University
-
Tatematsu Yoshinori
Research Center For Development Of Far Infrared Region University Of Fukui
-
Imai Tsuyoshi
Plasma Research Center, University of Tsukuba
-
Watanabe Osamu
Plasma Research Center, University of Tsukuba
-
TATEMATSU Yoshinori
Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
-
OGURA Kazuo
Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
-
Shima Yoriko
Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
-
IMAI Tsuyoshi
Plasma Research Center, Tsukuba University
関連論文
- Achievement of 10 keV Central Electron Temperatures by ECH in LHD
- Linear Analysis of a Localized Plasma-Loaded Backward Wave Oscillator Driven by an Annular Intense Relativistic Electron Beam
- Prevention of Reversed Flow in Gas Divertor with High Vacuum Chamber
- 表面磁場による完全β=1プラズマ保持配位への自発転移
- シート・プラズマ中のヘリウムイオン温度
- LHDダイバｰタ模擬実験のための高熱流シｰトプラズマ開発研究
- Linear Mode Conversion between Ordinary and Extraordinary Waves in Plasma with Large Magnetic Shear
- Linear Dispersion Relation of Double Period Slow Wave Structure for High-Power Backward Wave Oscillators
- Resonant Enhancement of Radiation from a Backward Wave Oscillator Utilizing Large Diameter Corrugated Metal Structure
- Linear Analysis of a Backward Wave Oscillator with Coaxial Slow Wave Structure
- Absolute Instability of Low-Frequency Electromagnetic Waves in a Plasma Waveguide with Periodic Boundaries
- Analysis on Field Line and Poynting Vectors in Corrugated Wall Waveguides
- Effect of Beam Energy Spread on Radiation Intensity in a High-Power Backward Wave Oscillator with Finite Length
- THz gyrotrons FU CW series (電子デバイス)
- Electromagnetic Field Properties of Axial Modes in a Finite Length X-Band Slow Wave Structure
- Analysis of Starting Currents in a Backward Wave Oscillator with Finite Structure Length
- Interaction of Axially Streaming Electron Beam with Axisymmetric TM Mode in a Periodical Slow Wave Structure with Finite Magnetic Field
- A New Numerical Integration Scheme of Very High Order and A-Stable
- Plasma Plugging in Gas Divertor
- Interchange Stability Criteria for Anisotropic Central-Cell Plasmas in the Tandem Mirror GAMMA 10
- Particle Orbit Analysis under the Ion Cyclotron Range of Frequency Heating in the Large Helical Device
- Field line and Particle orbit Analysis in the Periphery of the Large Helical Device
- Spontaneous Formation of Spherical Tokamak by ECH on LATE
- Numerical Simulation on the Flute Instabilities in the GAMMA10 Magnetic Field
- Protuberances of Plasma Pressure Caused by Moderately High Power Microwaves in a Corrugated Wall Waveguide
- Single Particle and Fluid Picture for the Ponderomotive Drift in Cold Magnetized Plasmas
- Excitation Characteristics of Ion Waves in a Negative Ion Plasma
- Performance of Weakly Relativistic Oversized Backward Wave Oscillators
- Cherenkov and Slow Cyclotron Instability in Periodically Corrugated Cylindrical Waveguide with Low Magnetic Field Region
- Role of Flute Modes in the GAMMA10 Tandem Mirror
- Studies of a Weakly Relativistic Oversized Backward Wave Oscillator with Disk Cathode and Rectangular Corrugation
- Estimation of the Effective Collective Thomson Scattering Volume Using a Gaussian Beam in the LHD ECRH System
- Evaluation of the Heating Effect in Neutral Beam Injection Experiments of the GAMMA 10 Tandem Mirror
- Investigation on Optimal Limiter Condition for Stable Sustainment of the Potential Confined Plasma in GAMMA 10
- Plasma Imaging by Using a High-speed Camera in the GAMMA 10 Tandem Mirror
- Study of Fluctuation Suppression during Potential Formation in the Tandem Mirror GAMMA 10
- Correlation between Low-Frequency Fluctuations and Plasma Stored Energy in GAMMA 10
- Measuring Electron Temperature in the Tandem Mirror GAMMA 10 Plasma Using a Yttrium-Aluminum-Garnet Thomson Scattering System
- Observation of Ion Cyclotron Emission Owing to DD Fusion Product H Ions in JT-60U
- Nonaxisymmetric Instabilities in Periodically Corrugated Cylindrical Waveguide with Low Magnetic Field
- Experimental Demonstration of Mode Change in a Q-Band Oversized Backward Wave Oscillator due to Corrugation Number
- First Results of Simultaneous Multipoint Plasma Potential Measurements Using a Gold Neutral Beam Probe
- Discriminating Acquisition of 15-MeV Protons from D-3He Fusion Reaction in LHD
- Experimental Study of Oversized Backward Wave Oscillator with Coaxial Slow-Wave Structure
- Collective Thomson Scattering Study Using Gyrotron in LHD
- Cherenkov Instability due to Unmagnetized Electron Beam in Periodically Corrugated Waveguide
- DT Fusion Ignition of LHD-Type Helical Reactor by Joule Heating Associated with Magnetic Axis Shift
- New Power Records of Sub-Terahertz Gyrotron with Second-Harmonic Oscillation
- Formation of Laminar Electron Flow for a High-Power Sub-THz Gyrotron
- Development of a Tera Hertz Gyrotron as a Radiation Source
- Measurement of Spatiotemporal Behavior of Alfvén-Ion-Cyclotron Waves in the GAMMA10 Tandem Mirror
- Preliminary Simulation Study of Doppler Reflectometry
- Effects of Radially Sheared Electric Field on Turbulence Reduction Analyzed with End-Loss Analysing Systems
- The Stability of Flute Modes in the GAMMA10 A-divertor
- Observation of the Pitch Angle Distribution of High-Energy Ions and their Radial Transport in the Central Cell of GAMMA10
- Experimental Study of Slow Cyclotron Maser Operation in Weakly Relativistic Region
- Design of Reflecting Mirrors for Electron Cyclotron Wave Launching System in GAMMA 10
- Improvement of Power Transmission for Fundamental Electron Cyclotron Resonance Heating System in GAMMA 10 Central Cell
- Achievement of High Power Sub-Terahertz Radiations with a Second Harmonic Gyrotron
- Particle Orbit Analysis under the Ion Cyclotron Range of Frequency Heating in the Large Helical Device
- Operation Characteristics of Microwave Sources Based on Slow-Wave Interaction in Rectangular Corrugation
- Numerical Study of Instabilities Induced by Sheet Electron Beam on Corrugated Metal Plate
- ECW/EBW Heating and Current Drive Experiment Results and Prospects for CW Operation in QUEST
- Improvement of ICRF Antenna Loading in the Minimum-B Configuration on GAMMA 10
- Density Fluctuation Measurement for Studying the Effect of Potential and Electric Field Formation in GAMMA 10
- Heat- and Particle-Deposition Distribution on Helical Divertor Plates in LHD During Real-Time Magnetic-Axis Swing Operations
- Density Control by Second Harmonic X-Mode ECRH in LHD
- Electron Density Measurement by Using a Multi-Channel Interferometer System in the Tandem Mirror GAMMA 10
- Numerical Study of Electromagnetic Surface Wave on Corrugated Metal Surface
- High Power and High Efficiency Operation of 77 GHz Gyrotrons by Stepwise Raising of the Anode Voltage
- Weakly Relativistic K-Band Oversized Backward Wave Oscillator with Bragg Reflector at Beam Entrance of Slow Wave Structure
- Experimental Study on Backward Wave Oscillation Based on Cylindrical Surface Wave of Smith-Purcell Free Electron Laser
- Analysis of Neutral Transport in GAMMA 10 SMBI Experiments
- Identification of Spurious Modes of High-Power 77-GHz Gyrotron for Collective Thomson Scattering in LHD
- Instability Driven by a Finitely Thick Annular Beam in a Dielectric-Loaded Cylindrical Waveguide
- Study of a Closed Divertor Configuration for the Three-Dimensionally Complicated Magnetic Structure in the LHD Plasma Periphery
- Helical Pitch Parameter Dependency of High Beta Equilibrium of Helical Plasmas
- Numerical Analysis of Slow-Wave Instabilities in an X-Band Sinusoidally Corrugated Waveguide with Coaxial Slow-Wave Structure
- Numerical Analysis of Slow-Wave Instabilities in an Oversized Sinusoidally Corrugated Waveguide Driven by a Finitely Thick Annular Electron Beam
- Higher Order Mode Radiations of Weakly Relativistic Oversized Backward Wave Oscillator