Charged particle beam apparatus having anticontamination means

Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports

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250398, 250397, G01N 2100, G01N 2300

Patent

active

060464577

ABSTRACT:
A charged particle beam apparatus having a cold trap positioned in proximity to components, such as a shaping aperture and a backscattered electrons detector, to which contaminants tend to migrate to adversely affect the functions of these components. As a coolant is passed through the cold trap, the contaminants condense on the cold trap and away from the shaping aperture and the backscattered electrons detector.

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