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SEM imaging of nonconductive powders at critical energy
Zobačová, Jitka ; Zdražil, Josef ; Müllerová, Ilona ; Frank, Luděk
As a rule, at electron energies normally used in SEM, the total electron yield is lower then 100% and some negative charge is dissipated in the specimen. This prevents observation of nonconductors in which the injected charge stays localized and its field destroys both geometry and brightness scale of the image.

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