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ELECTRONS AND THEIR INTERACTION
THE TRANSMISSION ELECTRON
THE SCANNING ELECTRON MICROSCOPE
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aberrations advantages Airy disc alloy alumina aluminium atomic number beam diameter beam of electrons biological bombardment Bragg angle brightness bubbles carbon cell Chapter characteristic X-rays composition contrast copper count rate crystal structure crystalline specimen depth of field detected display effect electron beam electron detector electron diffraction electron gun electron probe electropolishing emitted EPMA equation example excite fluorescence grain hence illustrated in fig incident electron instrument large number lattice planes layer lenses light elements light microscope low energy magnification materials metal method micro micrograph microprobe niobium normally objective aperture objective lens optical orientation peak phase possible qualitative quantitative analysis raster reflected region resolution scanning electron microscope screen secondary electrons seen semiconductor detector shown in fig shows signal single solid specimen specimen surface spot staining STEM technique thickness thin specimen transmission electron microscope types vacuum voltage wavelength