Ralf Roehlsberger

ORCID: 0000-0001-6005-5183
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About
Contact & Profiles
Research Areas
  • Crystallography and Radiation Phenomena
  • Advanced X-ray Imaging Techniques
  • Magnetic properties of thin films
  • Particle Accelerators and Free-Electron Lasers
  • Medical Imaging Techniques and Applications
  • Electron and X-Ray Spectroscopy Techniques
  • X-ray Spectroscopy and Fluorescence Analysis
  • X-ray Diffraction in Crystallography
  • Advanced Electron Microscopy Techniques and Applications
  • Magnetic Properties and Applications
  • nanoparticles nucleation surface interactions
  • Laser-Plasma Interactions and Diagnostics
  • Synthesis and properties of polymers
  • Advanced Materials Characterization Techniques
  • Electromagnetic Simulation and Numerical Methods
  • Radiation Detection and Scintillator Technologies
  • Microstructure and mechanical properties
  • Advanced X-ray and CT Imaging
  • Magneto-Optical Properties and Applications
  • Atomic and Subatomic Physics Research
  • Magnetic Properties of Alloys
  • Particle Detector Development and Performance
  • Black Holes and Theoretical Physics
  • Ion-surface interactions and analysis
  • Geophysics and Sensor Technology

Deutsches Elektronen-Synchrotron DESY
2016

Czech Academy of Sciences
2005

Czech Academy of Sciences, Institute of Physics
2005

Argonne National Laboratory
1999

The DESY NanoLab is a facility providing access to nano-characterization, nano-structuring and nano-synthesis techniques which are complementary the advanced X-ray available at DESY’s light sources. It comprises state-of-the art scanning probe microscopy focused ion beam manufacturing, as well surface sensitive spectroscopy for chemical analysis. Specialized laboratory x-ray diffraction setups successful sample pre-characterization before precious synchrotron beamtimes. Future upgrades will...

10.17815/jlsrf-2-140 article EN cc-by Journal of large-scale research facilities JLSRF 2016-06-09

Abstract Quantum field theory predicts a nonlinear response of the vacuum to strong electromagnetic fields macroscopic extent. This fundamental tenet has remained experimentally challenging and is yet be tested in laboratory. A particularly distinct signature resulting optical activity quantum birefringence. offers an excellent opportunity for precision test electrodynamics uncharted parameter regime. Recently, operation high-intensity Relativistic Laser at X-ray Free Electron provided by...

10.1017/hpl.2024.70 article EN cc-by-nc-nd High Power Laser Science and Engineering 2025-01-01

A readout system based on the Timepix4 ASIC, is being developed for photon science. The TEMPUS detector can be operated in two distinct modes: a counting mode, which allows conventional full-frame at rates up to 40 kfps; and an event-driven time-stamping excellent time resolution nanosecond regime measurements with moderate X-ray flux. In this paper, we introduce initial prototype, single-chip system, present first results obtained PETRA III ESRF.

10.48550/arxiv.2404.07120 preprint EN arXiv (Cornell University) 2024-04-10

Aside from normal rotational motion during collection of diffraction data protein single crystals at synchrotron beamlines, additional movement the nylon cryoloops holding these samples has been observed, due likely to action nitrogen gas stream used cool cryogenically.A series experiments was performed on bending-magnet beamline (19BM) Structural Biology Center Argonne's Advanced Photon Source in an attempt characterize cryoloop movement.A baseline for goniometer and timing shutter...

10.1107/s0108767305094171 article EN Acta Crystallographica Section A Foundations of Crystallography 2005-08-23

The adjustment of the size-dependent catalytic and optoelectronic properties gold cluster assemblies is a very significant topic in modern applied nanotechnology [1]. For an efficient controlled production active nanostructured surfaces, sputter deposition plays important role [2]. In order to characterize self-organization during nanocluster film formation, it mandatory understand how growth kinetics influences morphology deposition. first real-time investigations into layer are enabled by...

10.1107/s2053273314088160 article EN Acta Crystallographica Section A Foundations and Advances 2014-08-05
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