Scanning Electron Microscope EM-30PLUS Operating Manual
75
Edge Effect according to Acceleration Voltage
As the value of acceleration voltage is high, corner of specimen image looks smudged, as it
is small, the corner surface of specimen image looks clearer.
Because high acceleration voltage makes the consumption of W electron of Filament high,
it causes bad effect on lifespan of Filament compared to low acceleration voltage.
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