Interactive Tutorial about Diffraction
Interactive example : 1D crystal builder

Basic examples
Single atom
Pair of atoms
Row of atoms

Interactive examples
1D crystal builder
Polygons of atoms
Different atoms
Ewald sphere
Units
Interference
Bragg's law

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Contents

 This interactive 1D crystal builder allows you to create a row of n electrons or Si and Pb atoms parallel to the x-axis. The separation distance is given in Å. You can also select whether to calculate X-ray of neutron intensities. The calculated range for the scattering intensity Q is fixed to -3*pi to 3*pi parallel to the direction of the row of atoms.

Start exploring and try to answer the questions below:

  • What is the effect on the scattering intensity as you increase the number of atoms ?

  • How does changing the distance between the atoms change the diffraction pattern ?

  • What is the influence of the electron/atom type on the X-ray scattering intensities ?

  • Describe the difference between X-ray and neutron scattering results.

Once you are done, click here to verify your answers.
© Th. Proffen and R.B. Neder, 2003