The X-Ray Diffraction Simulator is a program developed at Carnegie Mellon using the cT programming language as an aid to teaching undergraduate courses involving crystallography. The program provides a graphical user interface to a computer simulation of x-ray powder diffraction of two-dimensional crystals. It is available at no cost for educational purposes or non-profit individual use. The user can define an arbitrary unit cell and populate it with atoms. It is possible to display diagrams of the lattice defined by the unit cell, as well as the Ewald sphere and reciprocal lattice. Finally, the program will calculate the diffraction pattern produced by the unit cell. It is possible to specify one of the ordinary wavelengths of x-rays used in practice to be used in calculating the diffraction pattern.
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