Scientists working with crystal samples for X-ray and neutron diffraction experiments can now get a little help calculating diffraction angles or d-spacings. BraggPanel (for MacOS) and Bragg Law (for iOS) are free beamline companions that can determine any of the parameters of Bragg’s law from the other two. For example, if you know the energy and d-spacing, then the tool will calculate the angle.

Argonne physicist Jon Tischler developed BraggPanel and Bragg Law for beamline staff and users of the Advanced Photon Source, and anyone engaged in X-ray or neutron diffraction studies. The tool also provides atomic positions, calculated values for the Kinematic and Dynamical Integrated Intensities, absorption factor and structure factor, and can further provide interactive plots for several other parameters. This tool is available for iPhone, iPad, and Mac (sorry no Windows or Android).

To obtain either one, search in the app store for “synchrotron” or use one of the following QR codes:

   for iPhone/iPad

for macOS