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Title: Photon-shot-noise-limited transient absorption soft X-ray spectroscopy at the European XFEL

Journal Article · · Journal of Synchrotron Radiation (Online)
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  1. European XFEL, Schenefeld (Germany)
  2. University of Duisburg-Essen (Germany)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  4. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Centre National de la Recherche Scientifique (CNRS), Strasbourg (France); Université de Strasbourg (France)
  7. Politecnico di Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  8. Consiglio Nazionale delle Ricerche (CNR), Trieste (Italy). Inst. of Materials (IOM)
  9. Heidelberg Univ. (Germany)
  10. European XFEL, Schenefeld (Germany); Max-Planck Institute for the Structure and Dynamics of Matter (Germany); Univ. of Southampton (United Kingdom)
  11. Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
  12. German Aerospace Center (DLR) (Germany); Technische Univ. Berlin (Germany)
  13. Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS) (France)
  14. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Hamburg Centre for Ultrafast Imaging, Hamburg (Germany)
  15. National Inst. of Nuclear Physics (INFN), Frascati (Italy); Rome International Center for Materials Science Superstripes (RICMASS) (Italy); Consiglio Nazionale delle Ricerche (CNR), Roma (Italy)
  16. European XFEL, Schenefeld (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  17. Univ. of Kiel (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Ruprecht Haensel Lab.
  18. Eidgenoessische Technische Hochschule (ETH), Zurich (Switzerland)
  19. Tor Vergata Univ. of Rome (Italy); National Inst. of Nuclear Physics (INFN), Rome (Italy)
  20. European XFEL, Schenefeld (Germany); Ca' Foscari University of Venice (Italy)
+ Show Author Affiliations

Femtosecond transient soft X-ray absorption spectroscopy (XAS) is a very promising technique that can be employed at X-ray free-electron lasers (FELs) to investigate out-of-equilibrium dynamics for material and energy research. Here, a dedicated setup for soft X-rays available at the Spectroscopy and Coherent Scattering (SCS) instrument at the European X-ray Free-Electron Laser (European XFEL) is presented. It consists of a beam-splitting off-axis zone plate (BOZ) used in transmission to create three copies of the incoming beam, which are used to measure the transmitted intensity through the excited and unexcited sample, as well as to monitor the incoming intensity. Since these three intensity signals are detected shot by shot and simultaneously, this setup allows normalized shot-by-shot analysis of the transmission. For photon detection, an imaging detector capable of recording up to 800 images at 4.5 MHz frame rate during the FEL burst is employed, and allows a photon-shot-noise-limited sensitivity to be approached. The setup and its capabilities are reviewed as well as the online and offline analysis tools provided to users.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
2004586
Journal Information:
Journal of Synchrotron Radiation (Online), Vol. 30, Issue 2; ISSN 1600-5775
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (13)

Fig. 1(p. 7)figure Fig. 1
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Fig. 10(p. 37)figure Fig. 10
Fig. 11(p. 39)figure Fig. 11
Table 1(p. 39)table Table 1
Table 2(p. 42)table Table 2

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
transient absorption soft x-ray spectroscopy
European XFEL