We measured the coherence properties of the free-electron laser SACLA on a single shot basis at an X-ray energy of 8 keV. By analysing small-angle X-ray scattering speckle patterns from colloidal dispersions we found a degree of transverse coherence of βt = 0.79 ± 0.09. Taking detector properties into account, we developed a simulation model in oder to determine the degree of coherence from intensity histograms. Finally we calculated a coherence time of τc = 0.1 fs and a pulse duration of 5.2 fs which corresponds with previous predictions.
ERRATUM: Single Shot Coherence Properties of the Free-Electron Laser SACLA in the Hard X-ray Regime
F. Lehmkühler,C. Gutt,B. Fischer,M. Schroer,M. Sikorski,Sanghoon Song,W. Roseker,J. Glownia,M. Chollet,S. Nelson,K. Tono,T. Katayama,M. Yabashi,T. Ishikawa,A. Robert,G. Grübel
Published 2014 in Scientific Reports
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- Publication year
2014
- Venue
Scientific Reports
- Publication date
2014-07-15
- Fields of study
Physics, Computer Science
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