The PETRA III P05 beamline is dedicated to full-field x-ray tomography. The microtomography setup of P05 offers 3D scans of samples of up ~12mm size with 1-2 µm spatial resolution. Within the practical you will gain a detailed insight into how data is taken and subsequently processed.
Beamline P11 is dedicated to diffraction experiments of biological macromolecules and designed to provide a stable yet flexible setup. During the practical, you will perform an MX experiment with a protein standard (such as lysozyme or insulin) in cryo conditions. You will learn aobut the concepts and instruments of the beamline as well as the data processing and structure solution.
Ifyou...
The practical session at beamline P21.1 will use high energy x-rays to obtain diffraction and total scattering patterns from various samples. The data will be processed to obtain the pair distribution function. The different information content of diffraction and total scattering data will be illustrated.
X-ray Absorption Spectroscopy (XAS) is a powerful method for the investigation of samples from different scientific disciplines. The spectra provide information on the oxidation state, local symmetry, and coordination number and distance of neighbouring atoms. An additional advantage of the method is that crystalline samples, especially large, single-crystals are not required, and that the...
Extended X-ray absorption fine structure spectroscopy (EXAFS) is an analytical method that yields information about the near range order around an absorber atom. We will measure EXAFS spectra of anatase and rutile, two crystal modifications of TiO2 and of CrO2 which adopts the rutile structure at beamline P65, DESY’s bulk EXAFS beamline. The three spectra nicely demonstrate, which structural...
