Surface morphology changes of graphite irradiated with energetic helium ions |
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| Authors: | S Vepřek A Portmann A P Webb H Stuessi |
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| Institution: | 1. Institute of Inorganic Chemistry, University of Zurich , R?mistrasse 76, 8001, Zurich, Switzerland;2. Institute of Physics, University of Zurich , Sch?nberggasse 9, 8001, Zurich, Switzerland |
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| Abstract: | Implantation of helium ions into graphite has been found to produce surface features, which are discussed in terms of radiation damage as a function of depth into the material. Annealing and electron microscope studies show these surface features to be still well defined after annealing at 1500°C. The suggested interpretation is consistent with the large surface stress found in the surface layers of implanted materials. |
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