Chemical Crystallography

Reciprocal Space Investigation Tools

The APEX2 suite offers a number of tools for a detailed analysis, using a set of diffraction images to reconstruct the reciprocal space. These powerful tools are built for tackling the most challenging samples (modulated, twinned samples, intergrown crystals, texture, … or whatever is waiting in reciprocal space) and are extraordinarily efficient teaching tools.

Reciprocal Lattice Viewer
Reciprocal Lattice Viewer

Reciprocal Lattice Viewer

The Reciprocal lattice viewer is an interactive tool to visualize and align complex reflection patterns.

  • Routines for graphical unit cell determination and layer display
  • Display and interactively modify a reflection array
  • Remove artifacts from strong amorphous scatterers
  • Visually separate twin components
  • Determine q-vectors of modulated samples
Pseudo Precession Photograph
Pseudo Precession Photograph

Pseudo Precession Photograph

The Pseudo precession photograph tool provides an undistorted view of layers in the reciprocal space.

  • Reconstruct Pseudo precession photographs pixel by pixel
  • Visualize Laue-class symmetry
  • Verify systematic absences
  • Visualize Thermal diffuse scattering
  • Select layers using non-integers
Diffraction Space Viewer
Diffraction Space Viewer

Diffraction Space Viewer

The concept of the Pseudo precession photograph tool is expanded to the three dimensional space.

  • Display the complete reciprocal space as a volume
  • Investigate textured samples, fibers and non-Bragg diffraction
  • Free rotation of the 3-D space including zoom, and display of slices

More Information

Read more on Data collection strategy planning — Another feature of our APEX2 software

Pseudo merohedral twinning - How to treat a six-fold twin (PDF poster)