Abstract
To clarify the working capacity of beryllium plasma facing armour, beryllium targets were tested under bombardment with hydrogen and deuterium ions. The tests were performed under different experimental conditions, including those providing an intense re-deposition of erosion products. Chemical elements' distribution, phase composition, microstructure of eroded and re-deposited Be-layers, and the accumulation of hydrogen isotopes in these layers are presented and discussed. Mutual re-deposition of Be and W erosion products and its effects on D-accumulation within the eroded areas and re-deposited layers are examined.
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