513.001 Molecular and Solid State Physics

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Physical
Constants

Periodic System
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Ewald's sphere - 3

X-rays with an energy of 8 keV are used to analyze a simple orthorhombic lattice (a = 0.6 nm, b = 0.8 nm, c = 0.4 nm). The x-rays propagate in the (001) plane and also the detector scans in the (001) plane. The problem can be solved in two dimensions, i.e. Ewald’s sphere becomes a circle.

Draw the reciprocal lattice together with the wave vector of the promary beam k as well as the wave vector of the scattered beam k' for the reflection 320.