Diffraction Lecture 13: Bragg's Law and Laue's Equations

In this lecture we examine the geometric conditions that lead to diffraction of X-rays by crystals. First, we derive Bragg's Law, which gives the angle at which the scattered X-rays constructively interfere if the X-rays are partially reflected from parallel planes in a crystal. Next, we consider scattering in the forward direction (transmission) of an incoming beam of X-rays by a one-dimensional crystal, which gives Laue's equations.

[@ETHAN-ec6pb]

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[@valeriereid2337]

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[@studysawa4248]

Amazing content, made things clearer, thanks a lot

[@maras.4668]

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[@user-iz2et4kj9y]

Thank you sir!

[@sherzadakhan3191]

Why do crystals have spacing between crysral planes.

[@gennadymedvedkin2801]

6:35 The dashed line 2-4 is not actually perpendicular to the scattered wave. The perpendicular should be corrected a little(!)