Question

Diffraction by Copper Metallic Copper (Cu) has a fcc lattice.

(a) Show that the constructive interference of structure factor for a f.c.c. lattice is 4f, where f is the atomic form factor for copper. [8]

(b) Calculate the structure-factor for the Bragg reflections (100), (110), (111), (200) assuming an atomic form factor of fCu independent of the scattering wavevector k. [5]

(c) Calculate the three smallest diffraction angles for X-rays with energy of 8048 eV and a lattice constant of 0.4 nm

Answer 1

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