Jörg Hallmann
European XFEL
17 Papers
16 Citations
Jörg Hallmann is an academic researcher from European XFEL. The author has contributed to research in topics: Laser & Speckle pattern. The author has an hindex of 6, co-authored 17 publications.
Chat about Author
Papers
Development of a hard X-ray split-and-delay line and performance simulations for two-color pump-probe experiments at the European XFEL
Wei Lu,Bernd Friedrich,T. Noll,Kangmin Zhou,Jörg Hallmann,Gabriele Ansaldi,Thomas Roth,Svitozar Serkez,Gianluca Geloni,Anders Madsen,Stefan Eisebitt +10 more
TL;DR: Simulations indicate that more than 109 photons on the sample per pulse-pair and up to about 10% photon energy separation can be achieved in the hard X-ray region using the SDL.
Materials Imaging and Dynamics (MID) instrument at the European X-ray Free-Electron Laser Facility.
Anders Madsen,Jörg Hallmann,Gabriele Ansaldi,Thomas Roth,Wei Lu,Chan Kim,Ulrike Boesenberg,Alexey Zozulya,Johannes Möller,R. Shayduk,Markus Scholz,A. Bartmann,A. Schmidt,I. Lobato,K. Sukharnikov,Mario Reiser,K. Kazarian,Ilia Petrov +17 more
TL;DR: The Materials Imaging and Dynamics (MID) instrument at the European X-ray Free-Electron Laser (EuXFEL) facility is described in this article, where the authors focus on studies of structure and dynamics in materials by coherent scattering and imaging using hard X-rays.
Single-pulse phase-contrast imaging at free-electron lasers in the hard X-ray regime
Johannes Hagemann,M. Vassholz,Hannes Paul Hoeppe,Markus Osterhoff,Juan Manuel Rosselló,Robert Mettin,Frank Seiboth,Andreas Schropp,Johannes Möller,Jörg Hallmann,Chan Kim,Markus Scholz,Ulrike Boesenberg,Robert Schaffer,Alexey Zozulya,Wei Lu,Roman Shayduk,Anders Madsen,Christian G. Schroer,Tim Salditt +19 more
TL;DR: In this article, a concept is presented to address the fluctuating illumination wavefronts by sampling the configuration space of SASE pulses before an actual recording, followed by a principal component analysis.
Implications of disturbed photon-counting statistics of Eiger detectors for X-ray speckle visibility experiments.
Johannes Möller,Mario Reiser,Jörg Hallmann,Ulrike Boesenberg,Alexey Zozulya,Hendrik Rahmann,Anna Lena Becker,Fabian Westermeier,Thomas Zinn,Federico Zontone,Christian Gutt,Anders Madsen +11 more
TL;DR: This paper reports on coherent scattering experiments in the low-count regime with less than one photon per pixel per acquisition on average, conducted with two detectors based on the Eiger single-photon-counting chip, and shows systematic deviations from the expected Poisson-gamma distribution.
15