Figure 1 shows the powder pattern window. The toolbar contains buttons to:
Print the window.
Save the drawing.
Transfer the
whole window to the clipboard.
Plot a ring pattern.
Show the help file.The integrated ring intensity is plotted with either a gaussian or lorentzian line shape (i.e. Ihkl/dhkl). The width of the line depends on the crystal size following a gaussian approximation of the sinc2 law of the crystal form envelope.
Figure 1 Ab initio powder pattern display ZnTe particle 6208 atoms (Fig. 3).
The high dynamic range of the powder pattern is shown in Fig. 3 (logarithm scale). The cutoff slider allows to display the relevant powder pattern lines.
A one unit cell powder pattern is show in Fig. 4.
Using the tool button 
a ring pattern is
calculated (Fig. 5). Its central part is shadowed by a beam stop sized by the cutoff. When
the cutoff size is zero, the pattern is displayed using a log scale when selected.
Figure 6 shows the powder pattern imported in the ring pattern indexing window.
Figure 6 The powder ring indexing window.
A Mathematica notebook is automatically created when the calculation of the powder pattern is completed. The plot of powder pattern after evaluation of the notebook (with Mathematica) is easy to modify and to adapt to special publihing requirements (Fig. 7).
