MATTER LogoIntroduction to Electron Microscopes

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Scanning Electron Microscope (SEM) > The Scanning System

Description of Flash Animation

This animation shows the scanning system with scanning modes.

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The scanning system has two sets of scan coils which are supplied with current from the scan generator. In the SEM, there are two scanning modes, and diffraction patterns can also be obtained.

Question

Questions
In the imaging mode, the scanned beam is shown pivoting about the centre of the final lens. Why is this important?

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