7 - Electron detection in TEM

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Fluorescent screen, photographic film, CCD cameras, and direct electron detector
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I think it is important to point out that high energy electrons can scatter great distances from their point of incidence in direct electron detectors, leading to a reduction in image resolution. Low energy electrons tend not to scatter too far, giving a near ideal modulation transfer function.

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WHAT IS THE FUNCTION OF READ-OUT IN A CCD CAMERA BECAUSE THE SIGNAL IS CONVERTED AT CCD LEVEL

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