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Alternative material investigated for superconducting radio-frequency cavity resonators

18-Jul-2019

In modern synchrotron sources and free-electron lasers, superconducting radio-frequency cavity resonators are able to supply electron bunches with extremely high energy. These resonators are currently constructed of pure niobium. Now an international collaboration has investigated the potential ...

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3D tomographic imagery reveals how lithium batteries age

09-May-2019

Lithium batteries lose amp-hour capacity over time. Microstructures can form on the electrodes with each new charge cycle, which further reduces battery capacity. Now an HZB team together with battery researchers from Forschungszentrum Jülich, the University of Munster, and partners in China have ...

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Water is more homogeneous than expected

22-Feb-2019

In order to explain the known anomalies in water, some researchers assume that water consists of a mixture of two phases even under ambient conditions. However, new X-ray spectroscopic analyses at BESSY II, ESRF and Swiss Light Source show that this is not the case. At room temperature and normal ...

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Blue phosphorus - mapped and measured for the first time

18-Oct-2018

Until recently, the existence of "blue" phosphorus was pure theory: Now an HZB team was able to examine samples of blue phosphorus at BESSY II for the first time and confirm via mapping of their electronic band structure that this is actually this exotic phosphorus modification. Blue phosphorus ...

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Fastest 3D tomographic images at BESSY II

10-Aug-2018

An HZB team has developed an ingenious precision rotary table at the EDDI beamline at BESSY II and combined it with particularly fast optics. This enabled them to document the formation of pores in grains of metal during foaming processes at 25 tomographic images per second - a world record. The ...

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Insight into catalysis through novel study of X-ray absorption spectroscopy

02-Aug-2018

An international team has made a breakthrough at BESSY II. For the first time, they succeeded in investigating electronic states of a transition metal in detail and drawing reliable conclusions on their catalytic effect from the data. These results are helpful for the development of future ...

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How the internal compass is constructed in magnetotactic bacteria

19-Apr-2018

Magnetotactic bacteria are usually found in freshwater and marine sediments. One species, Magnetospirillum gryphiswaldense, is easily cultivated in the lab - with or without magnetic nanoparticles in their interior depending on the presence or absence of iron in the local environment. "So these ...

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A new record at BESSY II: ten million ions in an ion trap cooled for the first time to 7.4 K

Magnetic ground states of dimeric nickel cations spectroscopically ascertained

30-Nov-2016

Previously it was only possible to cool down about one thousand ions to 7.5 K using buffer gas. However, a thousand ions are not nearly enough for spectroscopic analyses. The ion trap with this new method provides a new opportunity to use cryogenic X-ray spectroscopy to study the magnetism and ...

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Ionic liquids simplify laser experiments on liquid samples

20-Oct-2016

An HZB team has developed a new approach to conduct photoemission spectroscopy of molecules in solution. This has been difficult up to now because the sample needed to be situated in vacuum – but liquids evaporate. The work has now demonstrated it is feasible to replace the solvent with an ionic ...

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Ferrous chemistry in aqueous solution unravelled

13-May-2016

The team demonstrated how a detailed picture of the electronic states can be ascertained by systematically comparing all of the interactive electronic processes in a simple system of aqueous iron(II). If a blindman feels the leg of an elephant, he can conclude something about the animal. And ...

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