Effect of Radiation Power Loss due to Impurity Gas Puff on Divertor Plasma
スポンサーリンク
概要
- 論文の詳細を見る
In order to examine the effect of radiation power loss due to impurity gas puff in divertor plasma, we calculated time evolution of impurity ion densities and electron temperature for several cases with Ne gas puff rates 1012 and 1013 cm−3 s−1 during 0.01 s and initial electron temperature 10-300 eV for a plasma with electron density 1013 cm−3 with a one zone model. We found that the electron temperature decreases less than 1 eV for the cases with gas puff rate 1013 cm−3 s−1, independent of initial electron temperature and in this case we expect plasma detachment. Detailed conditions for plasma detachment should also depend on time history of radiation power.
著者
-
MASUZAKI Suguru
National Insitute for Fusion Science
-
Kato Daiji
National Inst. Fusion Sci. Toki Jpn
-
SAKAUE Hiroyuki
National Institute for Fusion Science
-
MURAKAMI Izumi
National Institute for Fusion Science
-
KATO Daiji
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
-
MURAKAMI Izumi
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
関連論文
- Abrupt Flushing of High-Density Core in Internal Diffusion Barrier Plasmas and its Suppression by Plasma Shape Control in LHD
- Achievement of 10 keV Central Electron Temperatures by ECH in LHD
- Suppression of Carbon Dust Formation by Nitrogen Injection into Hydrogen Plasmas in Detached Plasma Conditions
- DOUBLE ELECTRON CAPTURE IN SLOW, HIGHLY CHARGED ION-MOLECULE COLLISIONS
- Extension of Improved Particle and Energy Confinement Regime in the Core of LHD Plasma
- Impurity Deposition and Retention of Discharge Gas on Plasma Facing Wall in LHD
- Impurity Retention Effect in the Edge Ergodic Layer of the Large Helical Device
- Helium Retention of 316L Stainless Steel Used for The First Wall of The Large Helical Device (LHD)
- Compact and Powerful Plasma Generator
- CHARGE DEPENDENCE OF RADIATIVE STABILIZATION AFTER DOUBLE ELECTRON TRANSFER IN HIGHLY CHARGED ION-MOLECULE COLLISIONS
- Chemical Erosion of Diamond-Coated Graphite under Low-Energy Hydrogen Atom Irradiation
- Total and Partial Dielectronic and Radiative Recombination of Xe^ Ions(Atomic and molecular physics)
- Atomic Charge-Changing Processes in Plasmas
- Axial Profile of Balmer-Alpha Emission near a Tungsten Target in the Compact PWI Simulator APSEDAS
- Progress in Impurity-Related Physics Experiments in LHD
- Neutral Gas Compression in the Helical Divertor with a Baffle Structure in the LHD Heliotron
- Transient Turbulent Heat Transfer for Heating of Water in a Short Vertical Tube
- Discriminating Acquisition of 15-MeV Protons from D-3He Fusion Reaction in LHD
- Charge Transfer by H+ Ion Impact from H and Na Atoms Adsorbed on Al(100) Surface
- Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines
- Microscopic Deformation of Tungsten Surfaces by High Energy and High Flux Helium/Hydrogen Particle Bombardment with Short Pulses
- Turbulence Effects on Bremsstrahlung Emission in the Turbulent Solar Plasma
- X-Ray Spectra from Neon-like Tungsten Ions in the Interaction with Electrons
- Interstitial Diffusion of C Interacting with Ambient H in Tungsten Crystals
- Neutral Particle Transport Simulation around a V-Shaped Target Using DEGAS 2 Code
- Simulation Analysis of the Design of a Vacuum Pumping System for the Closed Helical Divertor in the Large Helical Device
- Effect of Radiation Power Loss due to Impurity Gas Puff on Divertor Plasma
- Computational Study of Turbulent Heat Transfer for Heating of Water in a Vertical Circular Tube : —Influence of Tube Inner Diameter on Thickness of Conductive Sub-Layer—
- Characterization of Ion Cyclotron Wall Conditioning Using Material Probes in LHD
- Analysis of Fe XXI Spectral Lines Measured in LHD Plasma
- Carbon Erosion and Dust Formation under Heavy Atomic Hydrogen Irradiation
- Assessment of Plasma Performance in a Magnetic Configuration with Reduced Poloidal Coils for a Helical DEMO Reactor FFHR-d1
- Toroidal Distributions of Amounts of Retained Gases and Deposited Impurities during 13th Experimental Campaign in the LHD
- Thermionic Energy Converter System Using Heat Flux in Divertor Region
- Visible Transitions in Highly Charged Tungsten Ions: 365 - 475 nm
- Density Regimes of Complete Detachment and Serpens Mode in LHD
- Investigation of Carbon Films on Material Probes in the Vicinity of Local Island Divertor in the Large Helical Device
- Pellet Injection and Internal Diffusion Barrier Formation in Large Helical Device
- Characteristics of Radiating Collapse at the Density Limit in the Large Helical Device
- Heat- and Particle-Deposition Distribution on Helical Divertor Plates in LHD During Real-Time Magnetic-Axis Swing Operations
- Scaling Laws of Intermittent Plasma Turbulence in Edge of Fusion Devices
- Measurement of Radial Structure of Energetic-Ion-Driven MHD Modes with a Fast Response Hα-Detector Array in the Large Helical Device
- Charge-Transfer Cross Sections of H+ Ions in Collisions with Noble Gas Atoms in the Energy Range below 4.0 keV
- Flux Control of Carbon Nanoparticles Generated due to Interactions between Hydrogen Plasmas and Graphite Using DC-Biased Substrates
- A Simple Method of H/He Influx Ratio Measurement as a Monitor for Machine Operation in LHD
- Plasma Diagnostics Required for a Heliotron-Type DEMO Reactor
- Influence of the Isotope Effect on the Charge-Exchange Process between Hydrogen Isotopes and Ions and Atoms of Plasma Facing Component Materials
- Observation of Striation in Collapsing Plasma
- Blob/Hole Generation in the Divertor Leg of the Large Helical Device
- Flux Control of Carbon Nanoparticles Generated due to Interactions between Hydrogen Plasmas and Graphite Using DC-Biased Substrates (Special Issue : Advanced Plasma Science and Its Applications for Nitrides and Nanomaterials)
- Study of a Closed Divertor Configuration for the Three-Dimensionally Complicated Magnetic Structure in the LHD Plasma Periphery
- Validation of Collisional Radiative Model of High-Z Multiple Charged Ions at NLTE Code Comparison Workshops
- Impurity Transport Study with TESPEL Injection and Simulation