Conveners
Advanced instrumentation and data analysis
- Martin Meven (RWTH Aachen University)
Advanced instrumentation and data analysis
- Manuel Hinterstein (Karlsruhe Institute of Technolgy)
To study the effect of high pressure on any sample property, suitable pressure devices are a fundamental requirement. Their design has to be tailored to the experimental demands regarding the intended pressure, the employed instrumentation and the expected scientific results. Our work presents the development of high pressure cells for neutron scattering on polycrystalline and...
The best crystal structures for publication require X-ray detectors with high signal-to-noise ratios and accurate intensities. The new PHOTON III detector family matches these requirements perfectly, offering mixed mode detection for the first time. Mixed mode detection simultaneously combines photon counting and integration, providing data of ultimate quality for both strong and weak...
During last decades we have been using organometallic cyclo-Pn complexes (n = 4, 5) as building blocks for the rational design of giant supramolecules, up to 4.6 nm in size [1-4]. The supramolecules consisting of hundreds of atoms frequently demonstrate weak scattering power due to the severe crystallographic disorder. In many cases, the use the high-flux synchrotron sources becomes the only...
The PERCIVAL detector, a CMOS imager specifically designed for the soft X-ray regime, has served in 2020 its two first user experiments, both at a Synchrotron Radiation source (SR) and also at a Free Electron Laser (FEL). Here, we report some preliminary results of both experiments as well as future plans.
The first experiment, in collaboration with groups at the HZB and MBI, used the P04...
Polarized neutron diffraction (PND) is a powerful method for investigating magnetic structures. It gives unique access to contributions from nuclear and magnetic scattering, their interference terms, and their magnetic chirality, and permits to distinct between them. In contrast to non-polarized neutron diffraction, where the scattered intensity depends on the square of the magnetic structure...
The neutron single crystal diffractometer BIODIFF at the research reactor Heinz Maier-Leibnitz (FRM II) is especially designed to collect data from crystals with large unit cells. The main field of application is the structural analysis of proteins, especially the determination of hydrogen atom positions. BIODIFF is a joint project of the Jülich Centre for Neutron Science (JCNS) and the FRM...
In the meantime the diffraction activities form the major portion of research at each large scale facility. Diffraction at neutron sources is exploring the full range of unique neutron properties (sensitivity to isotopes and magnetic subsystems, nuclear scattering form-factors independent on Q etc) and provides structural information complementary to X-ray or electron diffraction. Despite the...
M. Meven$^{*1,2}$, A. Grzechnik$^1$, V. Hutanu$^{1,2}$, K. Friese$^3$, A. Eich$^{1,3}$ and G. Roth$^1$
$^1$Institute of Crystallography, RWTH Aachen University, 52056 Aachen, Germany
$^2$Jülich Centre for Neutron Science at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich GmbH, 85747 Garching, Germany
$^3$Jülich Centre for Neutron Science–2/Peter Grünberg-Institute–4,...
