Roentgen Medal 2017 for Henry Chapman
07 April 2017
Henry Chapman the head of the DESY Coherent Imaging group at CFEL will be awarded the Roentgen Medal by the city of Remscheid on Saturday, 8 April 2017. The town in which Wilhelm Conrad Roentgen ... Chapman’s team develops sophisticated new experimental techniques for making use of the excellent new opportunities offered by free-electron lasers (FEL). The X-ray pulses produced by these ...
Max von Laue Prize goes to CFEL scientist Thomas White
29 March 2017
Jury recognizes the program suite CrystFEL as an outstanding achievement in the field of crystallography. For his outstanding contribution to the analysis of biomolecules with X-ray lasers, ... Before such analyses can be carried out, the samples first need to be grown in the form of crystals. The diffraction pattern then reveals the spatial structure of the crystal, and hence that of its ...
Pinball at the atomic level
27 March 2017
Scientists from the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at CFEL in Hamburg and of the University of Edinburgh have currently discovered a new intermediate state for ... In the solution phase, the triiodide anions photodissociates predominantly into iodine radical ([I]•) and diiodide ([I₂]•⁻) radicals. The surrounding solvent plays a passive role in the ...
Journal designated Sang-Kil Son an 'Emerging Leader'
23 March 2017
How photons change chemistry
08 March 2017
Theoretical description of molecules under the influence of quantized light. The quantum nature of light does usually not play an important role when considering the chemical properties of atoms ... Experimentally such situations have already been observed, but theoretical predictions of the chemical properties of such states were possible only to a limited extend. The reason being that the ...
Novel nozzle saves crystals
16 March 2017
Double flow concept widens spectrum for protein crystallography Thanks to an innovative nozzle, scientists can now analyze more types of proteins while using fewer of the hard-to-get protein ... Many proteins do not like being squeezed into crystals as it contradicts their natural state. “Growing protein crystals is complex, the amount of protein that can be produced is often limited ...
X-ray pulses reveal structure of viral cocoon
13 February 2017
An international team of scientists has used high-intensity X-ray pulses to determine the structure of the crystalline protein envelope of an insect virus. Their analysis reveals the fine details of ... “The granulovirus attacks certain insects and kills them. This initially leaves it stranded inside the decaying host, so it has to protect itself, perhaps for years, against adverse ...
Researchers unravel dynamics of electron clouds
06 February 2017
A US-German research team has elucidated the ultra-fast dynamics of electron clouds in xenon atoms. Using attosecond technology, the scientists around Stephen R. Leone from the University of ... Electrons are not only spatially displaced by electromagnetic fields, they can also absorb the energy of the field which puts them in an excited state. If the energy is high enough, the electrons can ...
Studying fundamental particles in materials
17 January 2017
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity to observe particle properties that have ... In the standard model of particle physics, the fundamental particles that make up all matter around us – electrons and quarks – are so-called fermions, named after the famous Italian ...
Laser metronome achieves record synchronization
12 January 2017
Scientists at DESY have set up the world's most precise ‘metronome’ for a kilometer-wide network. The timing system synchronizes a 4.7-kilometer-long laser-microwave network with 950 ... “Extreme timing accuracy is important for many areas of research,” says PhD student Kemal Şafak from Kärtner's group, one of the lead authors of the paper. “For instance, ...