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Abstract
The comparative study of morfology change of different kinds of beryllium after being subjected to the periphery plasma (nc ≤ 1013 cm−3, Te. ≃ 15 eV) of a pulse reflex discharge is carried out. It was shown that the probability of arcing is much lower for samples made of ingot as compared to samples made of the hot pressed beryllium. The latter samples differ also by high number of blisters that can be divided in two groups: every large blister with a doubled boundary (the mean diameter size is D = 0.8 μm) has a pore, and small blisters (D -0.3 μm) have no pores at all.