condição de bragg figure 3.19 schematic diagram of an x-ray diffractometer; t= x-ray source, s=...
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Condição de Bragg
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FIGURE 3.19 Schematic diagram of an x-ray diffractometer; T= x-ray source, S= specimen, C= detector, and O= the axis around which the specimen and detector rotate. (William D. Callister, JR. Materials Science and Engineering an Introduction, John Wiley & Sons, Inc.)
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FIGURE 3.20 Diffraction pattern for polycrystalline -iron. (William D. Callister, JR. Materials Science and Engineering an Introduction, John Wiley & Sons, Inc.)
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Para o ferro (BCC), calcule (a) o espaçamento inter-planar, e (b) a ângulo de difração para o plano (220). O parâmetro de rede para o Fe é de 0.2866 nm. Considere uma radiação monocromática de comprimento de onda 0.1790 nm e reflexão e de primeira ordem (n=1).
Exercício
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Absorção de raios-X
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Microscopia eletrônica de transmissão
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