An energy-modulated primary beam was used for minimising the surface charging-up below 100 eV. ... The experiments were controlled by a PDF 11 processing computer. ... The MgO crystal of dimensions 5x5x0.7 mm was cut from bulk material (Atomergic Chemetals Corp., USA) and mounted onto a pocket-like specimenanbsp;...
|Title||:||Proceedings of the Fourth International Conference on Solid Surfaces (a Triennial Meeting of the International Union for Vacuum Science, Technique and Applications) and the Third European Conference on Surface Science (a Topical Annual Meeting Sponsored by the European Physical Society), September 22-26, 1980, Cannes, France|