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Changing composition and structure of the near surface region of wall materials in fusion devices can modify substantially the plasma surface interaction and hence influence the performance of fusion plasmas. Main aspects are the control of the plasma impurity production and of hydrogen recycling. Important mechanisms are reviewed and examples from major fusion devices are discussed.

Additional information

Authors: WINTER J, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE)
Bibliographic Reference: Report: 3124 EN (1995) 33pp.
Availability: Available from Forschungszentrum Jülich GmbH, Zentralbibliothek, 52425 Jülich (DE)
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