Pre-Lab Questions to Lab 4 - Diffraction of X-Rays and Electrons (Part 1)

1. Using the geometry of the diffraction seen in Fig. 1, derive the Bragg condition for constructive interference.

2. Setting the accelerating voltage potential energy equal to the kinetic energy of the electron, solve for the wavelength in Eq. 1 of the e-diffraction experiment.

3. If you were designing an X-ray source or electron source for a diffraction experiment, what characteristics would you need the source to display in order to get the information you need to infer the structure of the samples?

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