Question #30e65

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A08
May 14, 2017

X-ray diffraction or X-ray crystallography is a technique used to study and determine the structure of a crystal at atomic or molecular level.

In this process atoms of crystals diffract an incident X-Ray beam in specific directions.

![http://hyperphysics.phy-astr.gsu.edu](https://useruploads.socratic.org/hxDEEc1IRGySD2bV6sW7_Bragglaw.gif)

Bragg's Law.

Maximum in the observed intensity of X-rays occurs as per the following conditions

  1. The angle of incidence == angle of scattering.
  2. The difference in pathlength is equal to integeral multiple of wavelength lambdaλ of X-rays.

" "2dsintheta=nlambda 2dsinθ=nλ

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