TRANSIENT LABORATORY NEXAFS SPECTROSCOPY ON SOLID AND LIQUID SAMPLES

Gnewkow, Richard

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

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

Language

eng

Handle URL

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

DOI

https://doi.org/10.15278/isms.2023.6982

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