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Hydrogen Recycling at Plasma Facing Materials : NATO Science Series II: Mathematics, Physics and Chemistry - C. H. Wu

Hydrogen Recycling at Plasma Facing Materials

NATO Science Series II: Mathematics, Physics and Chemistry

By: C. H. Wu (Editor)

Paperback

Published: 30th November 2000
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One of the most important issues in the construction of future magnetic confinement fusion machines is that of the materials of which they are constructed, and one of the key points of proper material choice is the recycle of hydrogen isotopes with materials at the plasma face. Tritium machines demand high safety and economy, which in turn requires the lowest possible T inventory and smallest possible permeation through the plasma facing materials. The recycle behaviour of the in-vessel components must also be known if the plasma reaction is to predictable and controllable, and finally, the fuel cycle and plasma operating regimes may be actively controlled by special materials and methods.
The book discusses both laboratory experiments exploring the basic properties of non-equilibrium hydrogen-solid systems (diffusion, absorption, boundary processes) and experimental results obtained from existing fusion machines under conditions simulating future situations to some extent. Contributions are from experts in the fields of nuclear fusion, materials science, surface science, vacuum science and technology, and solid state physics.

Preface
Hydrogen Recycling in Fusion Devices
Density control and plasma wall interaction in Tore Supra
Wall pumping and hydrogen recycling in TEXTOR 94
Hydrogen recycling in the RFX Reversed Field Pinch
Active Particle Control
Active control of hydrogen recycling by the permeation and absorption techniques
Deuterium pumping with superpermeable membrane in the divertor of JFT-2M Tokamak
Wall pumping in Tokamak with lithium
Hydrogen Reflection and Secondary Hydrogen Particles
Reflection and adsorption of hydrogen atoms and molecules on graphite and tungsten
Detached recombining plasmas in relation to volumetric hydrogen recycle
Halpha spectroscopic study of hydrogen behavior in a low temperature plasma
Metal surface microrelief formed due to sputtering by mono- and variable energy ions of hydrogen plasma
Recycled hydrogen in excited state
Main research results in hydrogen thermosorptive activation by metal hydrides
Hydrogen Transport in Materials
The modulated permeation technique used at the open university
A model for calculation of tritium accumulation and leakage in plasma facing sandwich structures
Transport of hydrogen through amorphous alloy
An interaction of hydrogen isotopes with austenitic Cr-Ni steels without and during reactor irradiation
Hydrogen recycle at plasma facing materials
Diffusion of tritium in V, Nb and Ta under concentration, temperature and electric potential gradients
Deuterium superpermeation through niobium membrane
Effects of helium on the superpermeation of the group Va metals
Membrane bias effects on plasma driven permeation of hydrogen through niobium membrane
Plasma driven permeation through the NB membrane at low temperature
Phenomenology model of hydrogen evacuation by metal membranes
Hydrogen recycling and wall equilibration in fusion devices
Hydrogen Retention and Release
Mechanisms of tritium retention in, and the removal of tritium from plasma facing materials of the Fusion Devices
Studies on tritium interactions with plasma facing material at the tritium process laboratory of JAERI
Tritium recycling and inventory in eroded debris of plasma-facing materials
Effects of Cu-impurity on retention and thermal release of D implanted into Be
Deuterium retention in beryllium and beryllium oxide
The effect of radiation damage and helium on hydrogen trapping in beryllium
Atomic hydrogen endash; graphite interaction
Deuterium retention in SI doped carbon films
Retention of 100 eV tritium in tungsten at high fluxes
Hydrogen absorption and desorption behavior with a boronized wall
Out of pile experiments on the investigation of hydrogen interaction with reduced activation ferritic-martensitic st4el F82H
Effects of Hydrogen, Helium and Plasma Impurities on PFM Behavior
Structure and relief modification of titanium and boron modified graphite under light ion irradiation
The simulation of the diagnostic mirror behavior under hydrogen isotope irradiation
Surface loss probabilities of neutral hydrocarbon radicals on amorphous hydrogenated carbon film surfaces: consequences for the formation of re-deposited layers in
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9780792366300
ISBN-10: 0792366301
Series: NATO Science Series II: Mathematics, Physics and Chemistry
Audience: General
Format: Paperback
Language: English
Number Of Pages: 363
Published: 30th November 2000
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 23.39 x 15.6  x 1.98
Weight (kg): 0.53