6 Bragg condition

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Here is the honeycomb structure again. Now on the right is the diffraction pattern that would be produced by this structure.

Click on lattice above the diffraction pattern to display the reciprocal lattice. The lattice points of the reciprocal lattice (with appropriate scaling factors determined by the experimental geometry) define the positions at which Bragg diffraction spots may appear.

Watch the diffraction pattern as you remove atom B. Put it back and use the sliders to move the atoms slowly around within the unit cell. All you can do is change the intensities of the spots! Why don't the positions of the spots change?

Click on the show planes button and DOUBLE-click near one of the reciprocal lattice points. The highlighted diffraction spot corresponds to Bragg reflection from the set of space lattice planes, two of which are drawn in the space lattice.