Abstract
The binding, adsorption and removal energies of atoms on the surfaces of Be with the major orientations (112¯0) and (112¯1), and of W and Be/W alloys with (110) and (111) orientations have been obtained from density functional theory calculations. An analysis of adatom formation on viable surfaces and of adsorption and step formation processes is provided as well. Possible surface changes at conditions occurring during plasma-wall interactions are discussed. The large differences of the energetic parameters for various surface orientations and terminations mean that atomistic modeling is indeed essential for understanding the behavior of PFMs in a fusion environment.
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