Proceedings of the International Symposium on Plasma Wall Interaction

ContentsForewordOpening of the Conference Welcome AddressSession A - Plasma in Interaction with the Wall Recent Results on Plasma-Wall Interaction in the T.F.R. Tokamak Divertors for Impurity Control and Review of Impurity Effects in PPL Tokamaks A Review of Work on Plasma-Wall Interactions and Divertor Experiments on DITE Energy Flux and Surface Temperature Measurements at Surfaces in the DITE Tokamak Wall Analysis in T.F.R. Performed by QWAASS Plasma-Wall Charge-Exchange Interactions in the 2XIIB Magnetic Mirror Experiment Effect of Neutral Injection Heating on the Impurity Level in the W VII A Stellarator Review of the Work on Plasma-Wall Interaction in Tokamak Plasma Confinement at JAERI Surface and Impurity Studies in ORMAK and ISX Alumina-Plasma Interaction in the PETULA Tokamak Modeling in the Edge of a Tokamak Plasma Kinetic Theory of Plasma in the Limiter-Shadow Region Screening Property of the Limiter Shadow Region for Heavy Wall Impurities Protection of Walls from Hard Disruptions in Large Tokamaks The Effect of Electric Field in the Divertor Scrape-Off Layer Review of the Work on Impurities and Plasma-Wall Interaction on the Pulsator Tokamak Neutral Particle Emission of the Pulsator Plasma During High-Density Discharges Models for Impurity Production and Transport in Tokamaks Investigation of Plasma-Wall Interaction by the Aid of a Plasma AcceleratorSession B - Impurity Content, Transport and Effects Impurity Transport in Tokamaks Atomic Rate Coefficients for Tokamak Plasmas Numerical Investigation of the Radial Impurity Transport in Tokamak Plasmas Collision-Dominated Multi-Ion Diffusion Relative Importance of Different Impurity Sources in Tokamak Reactors as Estimated from Particle Balance Equations Suppression of the Internal Disruption in a Tokamak by Neutral Injection Heating Sputtering and Neutral Injection Heating The Plasma Instabilities due to Impurity Ions Energy and Angular Distribution of Bremsstrahlung Flux from Tokamak PlasmasSession C - Surface Effects Arcing Surface Phenomena Methane Formation During Hydrogen Ion Irradiations of Silicon and Boron Carbides Interaction of Boron Materials with a Hydrogen Plasma Laser Induced Desorption as a Method to Study the Interaction of Gases with Metal Surfaces Thermochemie von Reaktionen der Metalle Nb, V und Mo mit Restgasen des Vakuums Interaction of Thermal Hydrogen Atoms with Stainless Steel and Graphite Induced Desorption from 316 L Stainless Steel Desorption of Surface Contaminants by Low-Energy Particle Impact Erosion and Changes in Surface Composition of Stainless Steel 316 after Low Energy Light Ion Bombardment at Temperatures Between 50 and 660°C Sputtering Yields of Graphite Using Microbalance Technique with keV Region He+, H+ Sputtering Yields for 0.1-6 keV Protons Incident onto Molybdenum and Graphite Targets Plasma Generation by Gas Ionization in Radial Electric and Axial Magnetic Fields The Role of Trapping Reflection and Diffusive Re-emission in the Recycling of Plasmas at Surfaces Wall Erosion by Physical and Chemical Sputtering and Blistering Plasma Wall Interactions, Glow Discharge Experiences for Fusion Reactor Studies Outgassing of Inconel and Some Low-Z Materials Semiempirical Theory on the Dependence of Blistering and Exfoliation on Radiation Swelling and Gas Pressure Blister Formation in Multiple Energy He Implanted Stainless Steel Blistering of Monocrystalline Vanadium by 10 keV Helium Ions Surface Erosion of Stainless Steel and Molybdenum by Low Energy High Dose He+ Bombardment Helium Profiles in Niobium and Molybdenum Crystal Lattice Stress in Pyrolytic Graphite Irradiated with 4 MeV Helium Ions Energy Reflections from Nb, Ag, and Au Bombarded with 1 - 10 keV Protons Optical Radiation from Hydrogen and Helium Scattered from Solid Surfaces Cleaning of Large Metallic Vessels for Plasma Confinement DevicesSession D - Diagnostic Methods Mass Spectrometric Measurements of Gas Release due to Plasma Wall Interactions in the DITE Tokamak Mass Spectroscopy in the TFR Machine The Role of Wall-Adsorbed Hydrogen in Tokamak Discharges Detection of Low Densities of Metal Atoms by Pulsed, Dye Laser Excited Fluorescence Spectroscopy Possible Applications of Atomic Fluorescence Spectroscopy in CTR Using CW Dye Lasers Special Problems in the Density Measurements of Sputtered Iron by Fluorescence Spectroscopy Detection of Neutral Hydrogen and Light Impurities by Resonance Scattering in the Vacuum Ultraviolet Low Energy Ion Scattering Study of Adsorbed Layers on Stainless Steel Surface Rauheitsuntersuchungen an Oberflachen mit dem Raster-Elektronenmikroskop (REM)Session E - Control of Plasma Wall Interaction The Effect of Cleaning and Other Surface Treatments on the Surface Composition of Technological Materials Cleaning of Large Metallic Vessels for Plasma Confinement Devices Mass Spectrometric Measurements of Gas Release due to Plasma Wall Interactions in the DITE Tokamak Plasma Wall Interaction in DIVA On Toroidal Divertors for Tokamaks Experimental Studies on the Methods of Surface Cleaning for Tokamak Devices Wall Conditioning Studies for ORMAK and ISX First Wall Surface Treating in the Frascati Tokamak FT Method of Controlling Impurity Transport Impurity Control in Near-Term Tokamak Reactors On Mechanical Divertors (Scrape-Off-Limiters) Disappearance of Hard-Rays from a Tokamak Plasma by ADDUcation of a Fast-Changing Magnetic Pulse Plasmas with Cold Blankets Gas-Blanket Studies in a Toroidal Discharge Experimental Results on the Penetration of Sputtered Atoms into a Neutral Gas Blanket Plasma-Wall Interactions Stationary-State Profiles in a Cylindrical Hydrogen Arc in a Gas Blanket Numerical Investigation of the Behaviour of Neutrals in the Wall Region of High Temperature PlasmasSession F - First Wall Problems in Future Large Confinement Devices On the Choice of the First Wall Material for the J.E.T. Experiment The PDX Experiment Control of Plasma Wall Interaction in the ASDEX Divertor Tokamak JT-4 ProgramList of Participants Subject Index