Time-resolved soft X-ray absorption spectroscopy in transmission mode on liquids at MHz repetition rates

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We present a setup combining a liquid flatjet sample delivery and a MHz laser system for time-resolved soft X-ray absorption measurements of liquid samples at the high brilliance undulator beamline UE52-SGM at Bessy II yielding unprecedented statistics in this spectral range. We demonstrate that the efficient detection of transient absorption changes in transmission mode enables the identification of photoexcited species in dilute samples. With iron(II)-trisbipyridine in aqueous solution as a benchmark system, we present absorption measurements at various edges in the soft X-ray regime. In combination with the wavelength tunability of the laser system, the set-up opens up opportunities to study the photochemistry of many systems at low concentrations, relevant to materials sciences, chemistry, and biology.

Metadaten
Author details:	Mattis Fondell ORCiD, Sebastian Oliver Eckert ORCiD GND, Raphael Martin Jay ORCiD GND, Christian Weniger, Wilson Quevedo, Johannes Niskanen, Brian Kennedy, Florian Sorgenfrei ORCiD GND, Daniel Schick, Erika Giangrisostomi, Ruslan Ovsyannikov ORCiD, Katrin Adamczyk ORCiD GND, Nils Huse ORCiD GND, Philippe Wernet ORCiD, Rolf Mitzner ORCiD GND, Alexander Föhlisch ORCiD GND
URN:	urn:nbn:de:kobv:517-opus4-437529
DOI:	https://doi.org/10.25932/publishup-43752
ISSN:	1866-8372
Title of parent work (German):	Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
Publication series (Volume number):	Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (780)
Publication type:	Postprint
Language:	English
Date of first publication:	2019/11/26
Publication year:	2017
Publishing institution:	Universität Potsdam
Release date:	2019/11/26
Tag:	complexes; dynamics; electronic-structure; iron(II); l-edge xas; molecular-structure; probe; spectra; spin-state; water
Issue:	780
Number of pages:	12
Organizational units:	Mathematisch-Naturwissenschaftliche Fakultät
DDC classification:	5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik
	5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer review:	Referiert
Publishing method:	Open Access
Grantor:	Horizon 2020
License (German):	CC-BY - Namensnennung 4.0 International