Hydrogen Recycling at Plasma Facing Materials

Hydrogen Recycling at Plasma Facing Materials

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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.
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Product details

  • Paperback | 363 pages
  • 157.5 x 238.8 x 22.9mm | 544.32g
  • Dordrecht, Netherlands
  • English
  • Softcover reprint of the original 1st ed. 2000
  • 27 Illustrations, black and white; X, 363 p. 27 illus.
  • 0792366301
  • 9780792366300

Table of contents

Preface. Hydrogen Recycling in Fusion Devices. 1. Density control and plasma wall interaction in Tore Supra; C. Grisolia. 2. Wall pumping and hydrogen recycling in TEXTOR 94; M. Mayer, et al. 3. Hydrogen recycling in the RFX Reversed Field Pinch; D. Bettella, et al. Active Particle Control. 4. Active control of hydrogen recycling by the permeation and absorption techniques; N. Ohyabu, et al. 5. Deuterium pumping with superpermeable membrane in the divertor of JFT-2M Tokamak; Y. Nakamura, et al. 6. Wall pumping in Tokamak with lithium; V.I. Pistunovich. Hydrogen Reflection and Secondary Hydrogen Particles. 7. Reflection and adsorption of hydrogen atoms and molecules on graphite and tungsten; E. Vietzke, et al. 8. Detached recombining plasmas in relation to volumetric hydrogen recycle; S. Takamura, et al. 9. Halpha spectroscopic study of hydrogen behavior in a low temperature plasma; B. Xiao, et al. 10. Metal surface microrelief formed due to sputtering by mono- and variable energy ions of hydrogen plasma; A.F. Bardamid, et al. 11. Recycled hydrogen in excited state; T. Tanabe. 12. Main research results in hydrogen thermosorptive activation by metal hydrides; Y.F. Shmal'ko. Hydrogen Transport in Materials. 13. The modulated permeation technique used at the open university; N.St.J. Braithwaite. 14. A model for calculation of tritium accumulation and leakage in plasma facing sandwich structures; A.A. Pisarev, M.A. Chudaeva. 15. Transport of hydrogen through amorphous alloy; I.E. Gabis, et al. 16. An interaction of hydrogen isotopes with austenitic Cr-Ni steels without and during reactor irradiation. Hydrogen recycle at plasma facing materials; B.G. Polosukhin, L.I. Menkin. 17. Diffusion of tritium in V, Nb and Ta under concentration, temperature and electric potential gradients; M. Sugisaki, et al. 18. Deuterium superpermeation through niobium membrane; M. Bacal, et al. 19. Effects of helium on the superpermeation of the group Va metals; M.E. Notkin, et al. 20. Membrane bias effects on plasma driven permeation of hydrogen through niobium membrane; Y. Nakamura, et al. 21. Plasma driven permeation through the NB membrane at low temperature; A.A. Skovoroda, et al. 22. Phenomenology model of hydrogen evacuation by metal membranes; A.V. Pereslavtsev, et al. 23. Hydrogen recycling and wall equilibration in fusion devices; P. Mioduszewski. Hydrogen Retention and Release. 24. Mechanisms of tritium retention in, and the removal of tritium from plasma facing materials of the Fusion Devices; C.H. Wu. 25. Studies on tritium interactions with plasma facing material at the tritium process laboratory of JAERI; T. Hayashi, et al. 26. Tritium recycling and inventory in eroded debris of plasma-facing materials; A. Hassanein. 27. Effects of Cu-impurity on retention and thermal release of D implanted into Be; B. Tsuchiya, et al. 28. Deuterium retention in beryllium and beryllium oxide; V.Kh. Alimov, A.P. Zakharov. 29. The effect of radiation damage and helium on hydrogen trapping in beryllium
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