%0 Journal Article
%A Engel, Robin
%A Ekimova, Maria
%A Miedema, Piter
%A Kleine, Carlo
%A Ludwig, Jan
%A Ochmann, Miguel
%A Grimm-Lebsanft, Benjamin
%A Ma, Rory
%A Teubner, Melissa
%A Dziarzhytski, Siarhei
%A Brenner, Guenter
%A Czwalinna, Marie Kristin
%A Roesner, Benedikt
%A Kim, Tae Kyu
%A David, Christian
%A Herres-Pawlis, Sonja
%A Rübhausen, Michael
%A Nibbering, Erik T. J.
%A Huse, Nils
%A Beye, Martin
%T Shot noise limited soft X-ray absorption spectroscopy in solution at a SASE-FEL using a transmission grating beam splitter
%J Structural dynamics
%V 8
%N 1
%@ 2329-7778
%C Melville, NY
%I AIP Publishing LLC
%M PUBDB-2021-00319
%P 014303 (1-7)
%D 2021
%X X-ray absorption near-edge structure (XANES) spectroscopy provides element specificity and is a powerful experimental method to probe local unoccupied electronic structures. In the soft x-ray regime, it is especially well suited for the study of 3d-metals and light elements such as nitrogen. Recent developments in vacuum-compatible liquid flat jets have facilitated soft x-ray transmission spectroscopy on molecules in solution, providing information on valence charge distributions of hetero atoms and metal centers. Here, we demonstrate XANES spectroscopy of molecules in solution at the nitrogen K-edge, performed at FLASH, the Free-Electron Laser (FEL) in Hamburg. A split-beam referencing scheme optimally characterizes the strong shot-to-shot fluctuations intrinsic to the process of self-amplified spontaneous emission on which most FELs are based. Due to this normalization, a sensitivity of 1
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:33564694
%U <Go to ISI:>//WOS:000629733800001
%R 10.1063/4.0000049
%U https://bib-pubdb1.desy.de/record/453962