Jansen: Modulated crystal structure of Pr 2SbO 2Īcta Crystallogr., Sect. Low temperature investigations for analysis of phase transitions, structure determination of temperature sensitive compounds, investigation of aperiodic structures und complex twinned crystals. Structural characterisation of new compounds with the help of X-ray diffraction methods on single crystals: Measurments of samples sensitive to air and moisture. Software for evaluation and analysis of modulated structures (commensurable and incommensurable).Video system for precise measuring of crystals (numerical absorption correction).Low temperature device: N-Helix, Oxford Cryosystems, temperature range 28 - 300 K.Measuring range: Maximum 2theta 145° (Cu), 120° (Mo).(Mo) and Incoatec Microfocus Source IµS (Cu), changeable use. Three circle diffractometer with conventional X-ray tube.Software for evaluation and analysis of any kind of twinned crystals.Low temperature device: Cryostream Plus, Oxford Cryosystems, temperature range 80 - 500 K.High sensitive 4k Chip: Maximum 2theta 78° / single frame.Three circle diffractometer with molybdenum X-ray tube.