SEM 20
Electron source for SEM and Auger experiments with spot size better than 20 nm at 25 kV beam voltage/0.5 nA beam current, at 25 mm working distance.
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SEM 250 / SEM 500
Electron source for SEM and Auger experiments with spot size better than 250 nm.
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SL 1000
Flange mounted electron source, optimised for a parallel electron beam at lowest kinetic energies.
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