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VII. Bragg’s law

VII. Bragg’s law. 7-1. Bragg’s law. When the total path difference equals to , diffraction occurs. n : order of reflection. Bragg’s Law:. The Bragg’s equation can be rewritten as. Therefore,. 7-2. Ewald sphere construction. : the wave number of the incident beam.

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VII. Bragg’s law

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  1. VII. Bragg’s law 7-1. Bragg’s law When the total path difference equals to , diffraction occurs. n: order of reflection Bragg’s Law:

  2. The Bragg’s equation can be rewritten as Therefore,

  3. 7-2. Ewaldsphere construction : the wave number of the incident beam : the wave number of the outgoing beam Define

  4. Proof: (i)

  5. (ii) is parallel to (h, k, l) plane normal Therefore,

  6. 7-3.EwaldSphere The reciprocal lattice is derived from the crystal structure Diffraction occurs at

  7. Ewald Sphere Diffraction condition 1/

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