The analysers are mounted onto x-z translation tables that allow them to view the interaction region accurately over the full range of angles accessible. The electron analysers are constructed from molybdenum and are mounted from two rotating gear plates controlled externally via the rotation feedthroughs on the top flange (see figure 2).In this case, electron emission comes from an area about twice the crystallographic size of a single atom. Nowadays it is possible to prepare very sharp emitters, including emitters that end in a single atom. ![]() ![]() The design of efficient modern field-emission electron guns requires highly specialized expertise.
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