Secondary Electron Images

Secondary electrons are produced when the microprobe electron beam interacts with the sample surface, producing low energy secondary electrons that are detected by the secondary electron detector. A secondary electron image appears 3-dimensional. A well-tuned instrument can produce secondary electron images at magnifications of 100,000x.

Click on an image to see a larger version of each secondary electron image.

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Volcanic ash shards from Mt Erebus, Antarctica

Field of view = 400 microns

Volcanic ash shards from Mt Erebus, Antarctica

Field of view = 400 microns

Fly ash from a coal fired power plant

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