Beer’s Absorption Law in TEM/STEM Measurements - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book https://www.globalsino.com/EM/ | ||||||||
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The Beer’s absorption law states that the transmission T of light through a substance has a logarithmic dependence. In TEM/STEM measurement, the "light" is the incident electron beam. Then, the Beer’s absorption law is given by the fraction (I/I0) of incident electrons transmitted through a thickness x, Then, the
image contrast C can be given by,
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