Beryllium films coatings for fusion applications

Full text: The ITER-like Wall Project, part of the 'JET programme in support of ITER', to be implemented on JET includes R and D activities to develop methods of deposing Be layers on Inconel and marker tiles and characterization of the Be coating purity by surface and structure analysis techniques as well. Two methods of Be deposition have been used to produce test samples: Thermionic Vacuum Arc (TVA) technique developed at National Institute for Laser, Plasma and Radiation Physics, at Magurele, Romania and standard thermal evaporation in vacuum developed at Nuclear Fuel Plant, at Mioveni, Romania. The principles of manufacturing processes and the properties of the Be coatings characterized by scanning electron and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and atomic force microscopy are presented. (authors)