Interactive Tutorial about Diffraction
Interactive example: 2D crystal builder
The controls on the left allow you to create a grid of atoms (Pb).
You can set the number of atoms in a- and b-direction, the ratio
of the separation distance and angle between the axes. This
defines the structure which than can be shifted and rotated with
respect to the real space coordinate system. The X-ray diffraction
pattern of the resulting structure is calculated.
Start exploring and try to answer the question below:
The program will draw the crystal structure in the left image, and the
corresponding diffraction pattern in the right image. All atoms will
be drawn in blue, except the atom at the origin of the unit cell which
is green. The unit cell is outlined in red. The corresponding unit
cell in reciprocal space is drawn in blue.
Once you are done, click
here to verify your answers.
Once you are done, click here to verify your answers.
|© Th. Proffen and R.B. Neder, 2003|