University of Illinois Urbana-Champaign

TRANSIENT LABORATORY NEXAFS SPECTROSCOPY ON SOLID AND LIQUID SAMPLES

Gnewkow, Richard

Content Files
6982.pdf
MH11_1.pdf
MH11_1.pptx

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https://hdl.handle.net/2142/122509

Description

Title
TRANSIENT LABORATORY NEXAFS SPECTROSCOPY ON SOLID AND LIQUID SAMPLES
Author(s)
Gnewkow, Richard
Contributor(s)
  • Schönfelder, Silvana
  • Grötzsch, Daniel
  • Dummin, Marc
  • Jonas, Adrian
  • Mantouvalou, Ioanna
  • Kanngießer, Birgit
  • Stiel, Holger
Issue Date
2023-06-19
Keyword(s)
Mini-symposium: Spectroscopy at Large-scale Facilities
Abstract
Molecular systems can be used for a wide range of applications but for a complete description knowledge about their transient electronic properties is often required. Optical-pump soft X-ray-probe NEXAFS spectroscopy is an ideal technique to investigate these systems due to its elemental and orbital selectivity which allows probing the time evolution of the electronic structure. Our laboratory transient NEXAFS spectrometer ᵃ is based on a laser-produced plasma source covering an energy range between 200 – 1500 eV with an energy resolving power of ≥1000 and 500 ps time resolution. Due to the high efficiency of the setup, the investigation of absorption changes as small as 10−⁴ is possible ᵇ. These parameters allow obtaining high-quality time-resolved NEXAFS spectra formerly only attainable at synchrotron radiation sources. Static and transient NEXAFS measurements in transmission of solid samples and measurements in the liquid phase with a flatjet system at the Carbon and Nitrogen K-edge as well as 3d metal L-edges will be presented. Possible synergies of these laboratory-based measurements in combination with synchrotron instrumentation will be discussed.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
Text
Genre of Resource
Conference Paper / Presentation
Language
eng
Handle URL
https://hdl.handle.net/2142/122509
DOI
https://doi.org/10.15278/isms.2023.6982

Owning Collections

Abstracts & Presentations - 2023 International Symposium on Molecular Spectroscopy PRIMARY