Agreement signed: Three neutron instruments will be transferred to the Polish research reactor MARIA in 2019
Agreement signed: HZB and NCBJ agreed to transfer and rebuild three of HZB’s neutron scattering instrumentsin 2019.
In February 2017 Helmholtz-Zentrum Berlin (HZB) and the National Centre for Nuclear Research (NCBJ) in Poland agreed to transfer and rebuild three of HZB’s neutron scattering instruments at the Polish research reactor MARIA in 2019. With support from the Polish Ministry of Science and Higher Education, the facility near Warsaw is currently being upgraded with latest generation technology, offering attractive research opportunities for neutron scientists from Germany and Europe.
After authorization by the Supervisory Board of HZB, the management of HZB agreed to the transfer of the neutron instruments E4 (2-axis diffractometer), E5 (4-circle diffractometer) and E6 (focusing powder diffractometer) to the Polish research reactor MARIA. At present the instruments are still located in the experimental hall of the research reactor BER II. They are currently operated for research co-operations (with external partners) but are not in user service. Also the neutron instrument E1 is currently being transferred to the Polish reactor MARIA.
“By this agreement we ensure, with the approval of the HZB Supervisory Board, that the neutron instruments of BER II will remain available to the user communities in Germany and Europe,” Prof. Dr. Anke Kaysser-Pyzalla, scientific director of HZB. The research reactor MARIA is currently undertaking extensive upgrades to a state-of-the-art facility, making it a highly attractive neutron source in Europe. The European and in particular the German user community will benefit from the re-location of the four neutron instruments from BER II. Once fully operational, the instruments will offer new research opportunities at the research reactor MARIA to all neutron users. A user service for scientists currently being set up.
The National Centre for Nuclear Research is the one of the largest research centers in Poland, with approximately 1,000 employees. It is home to the sole research nuclear reactor in the country. The research focus of NCBJ is on basic and applied research in widely understood nuclear physics, plasma physics, solid-state research and technological advancement. NCBJ also produces linear accelerators and radio isotopes for industry and medicine. More about NCBJ
More about the instruments at BERII
- New contact material boosts the efficiency of perovskite solar cellsA newly developed material for the electron contact improves the efficiency of single perovskite solar cells and perovskite/silicon tandem solar cells. The new material is based on a carborane molecule. It offers several advantages over the standard material C60, as shown by the study led by Steve Albrecht’s team. The new material has since been patented and is already commercially available.
- Precision interface chemistry pushes perovskite solar cells beyond 26% efficiencyAn international research collaboration has developed a new molecular strategy for controlling one of the most critical interfaces in perovskite solar cells. The resulting solar cells reached a power conversion efficiency of 26.19% in the n i p architecture, together with strong operational stability under prolonged illumination and elevated temperature. The results have been published in the Journal of the American Chemical Society.
- Magnetic imaging: Micro-flowers increase the local magnetic fieldMaterials with magnetic nanostructures have many potential applications such as in spintronics. To explore such materials, nanoscale magnetic-sensitive imaging techniques are very useful, but up to now only weak magnetic fields could be applied during the imaging process. Now an international collaboration led by Dr. Sergio Valencia, HZB, has developed an approach that overcomes this limitation. The team designed tiny magnetic flux concentrators (MFCs), into which the sample is placed. The geometry of the MFCs resembles a flower with a number of petals which focus the applied magnetic field into its center. This greatly expands the magnetic field range available during imaging, and so the range of magnetic systems that can be investigated. The micro-flowers, enhancing magnetic fields locally, can find application in different nanometric magnetic microscopy techniques.