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Title: Covariance mapping of two-photon double core hole states in C 2 H 2 and C 2 H 6 produced by an x-ray free electron laser

Journal Article · · New Journal of Physics
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [7];  [7];  [7];  [7];  [8];  [9];  [10];  [10];  [10];  [11];  [12];  [13];  [14] more »;  [15];  [16];  [15];  [17];  [15];  [15];  [15];  [18];  [19];  [20];  [21];  [21];  [22] « less
  1. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy.
  2. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy; Univ. of Gothenburg (Sweden). Dept. of Physics; Stockholm Uinv. (Sweden). AlbaNova University Center, Dept. of Physics
  3. Imperial College, London (United Kingdom). Department of Chemistry.
  4. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy; Univ. of Gothenburg (Sweden); Imperial College, London (United Kingdom). Dept. of Physics
  5. Imperial College, London (United Kingdom). Dept. of Physics
  6. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy; Oxford University, (United Kingdom). Dept. of Chemistry
  7. Stockholm Univ. (Sweden). Dept. of Physics, Albanova University Center.
  8. Advanced Study Group of the Max Planck Society, Hamburg (Germany); Max Planck Institute fur medizinische Forschung, Heidelberg (Germany).
  9. Max Planck-Institute fur Kernphysik, Heidelberg (Germany); Physikalisch-Technische Braunschweig (Germany)
  10. Tohoku Univ., Sendai (Japan). Institute for Interdisciplinary Material Research
  11. Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics
  12. Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics; Univ. of Texas, Arlington, TX (United States). Center for High Energy Density Science
  13. Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics
  14. Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics; Univ. of Connecticut, Storrs, CT (United States). Dept of Physics
  15. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  16. SLAC National Accelerator Lab., Menlo Park, CA (United States); SOLEIL, Gif-sur-Yvette (France)
  17. SLAC National Accelerator Lab., Menlo Park, CA (United States); NSF BioXFEL Science and Technology Center, Buffalo, NY (United States)
  18. Hiroshima Univ. (Japan). Institute for Sustainable Science and Development.
  19. Hiroshima Univ. (Japan). Dept. of Physical Science.
  20. Univ. of Paris (France). Laboratoire de Chimie Physique, Matière et Rayonnement (LCPMR) and CNRS
  21. Elettra-Sincrotrone Trieste, Basovizza (Italy)
  22. Uppsala Univ. (Sweden). Dept. of Physics and Astronomy; Univ. of Gothenburg (Sweden). Dept. of Physics
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Few-photon ionization and relaxation processes in acetylene (C2H2) and ethane (C2H6) were investigated at the linac coherent light source x-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation spectroscopy technique based on a magnetic bottle. The analysis method of covariance mapping has been applied and enhanced, allowing us to identify electron pairs associated with double core hole (DCH) production and competing multiple ionization processes including Auger decay sequences. The experimental technique and the analysis procedure are discussed in the light of earlier investigations of DCH studies carried out at the same FEL and at third generation synchrotron radiation sources. In particular, we demonstrate the capability of the covariance mapping technique to disentangle the formation of molecular DCH states which is barely feasible with conventional electron spectroscopy methods.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
EP/F032517/1; EP/F034601/1; FIRB-RBAP045JF2; FIRB-RBAP06AWK3; AC03-76SF00515
OSTI ID:
1211615
Journal Information:
New Journal of Physics, Vol. 17, Issue 7; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (33)

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Cited By (6)

Femtosecond-resolved observation of the fragmentation of buckminsterfullerene following X-ray multiphoton ionization journal September 2019
Study of double core hole excitations in molecules by X-ray double-quantum-coherence signals: a multi-configuration simulation journal January 2016
Double core hole valence-to-core x-ray emission spectroscopy: A theoretical exploration using time-dependent density functional theory journal October 2019
Short-wavelength free-electron laser sources and science: a review text January 2017
Pulse Duration of Seeded Free-Electron Lasers text January 2017
Short-wavelength free-electron laser sources and science: a review journal October 2017

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
double core hole
free electron laser
few-photon process
covariance mapping