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Abstract

This paper reports the results of scanning tunnelling (STM) and atomic force microscopy (AFM) studies of D(+) irradiated graphite and graphite-silicon mixtures. The substrates were exposed at various temperatures (60 and 700 C) to different doses of deuterium ions in simulators of plasma-surface interactions and in the TEXTOR tokamak. In the initial stages of radiation damage, nanometre-sized bubbles/blisters were found in plasma-eroded surfaces. These structures only appeared in the graphite phase on the multicomponent material. The microroughness of the surfaces was measured. The thickness of the plasma-modified layers correlated with the presence of deuterium measured by NRA depth-profiling. Co-deposited layers were found on surfaces facing the tokamak plasma.

Additional information

Authors: ALMQVIST N, Luleà University of Technology (SE);FREDRIKSSON S, Luleà University of Technology (SE);RUBEL M, Royal Institute of Technology, Stockholm (SE);EMMOTH B, Royal Institute of Technology, Stockholm (SE);WIENHOLD C, Forschungszentrum Jülich GmbH (KFA) (DE);ILYINSKY L, Institute of Electrical Engineering, St. Petersburg (RU)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vols. 220-222 (1995) pp. 917-921
Record Number: 199510898 / Last updated on: 1995-08-10
Category: PUBLICATION
Original language: en
Available languages: en