Lehmkühler, Felix
Gutt, Christian
Fischer, Birgit
Schroer, Martin A.
Sikorski, Marcin
Song, Sanghoon
Roseker, Wojciech
Glownia, James
Chollet, Mathieu
Nelson, Silke
Tono, Kensuke
Katayama, Tetsuo
Yabashi, Makina
Ishikawa, Tetsuya
Robert, Aymeric
Grübel, Gerhard
Article History
Received: 26 March 2014
Accepted: 20 May 2014
First Online: 10 June 2014
Change Date: 15 July 2014
Change Type: Update
Change Details: A correction has been published and is appended to both the HTML and PDF versions of this paper. The error has not been fixed in the paper.
Change Date: 15 July 2014
Change Type: Erratum
Change Details: 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 <i>β</i><sub><i>t</i></sub> = 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 <i>τ</i><sub><i>c</i></sub> = 0.1 fs and a pulse duration of 5.2 fs which corresponds with previous predictions.
Competing interests
: The authors declare no competing financial interests.