TY  - JOUR
AU  - Engel, Robin
AU  - Ekimova, Maria
AU  - Miedema, Piter
AU  - Kleine, Carlo
AU  - Ludwig, Jan
AU  - Ochmann, Miguel
AU  - Grimm-Lebsanft, Benjamin
AU  - Ma, Rory
AU  - Teubner, Melissa
AU  - Dziarzhytski, Siarhei
AU  - Brenner, Guenter
AU  - Czwalinna, Marie Kristin
AU  - Roesner, Benedikt
AU  - Kim, Tae Kyu
AU  - David, Christian
AU  - Herres-Pawlis, Sonja
AU  - Rübhausen, Michael
AU  - Nibbering, Erik T. J.
AU  - Huse, Nils
AU  - Beye, Martin
TI  - Shot noise limited soft X-ray absorption spectroscopy in solution at a SASE-FEL using a transmission grating beam splitter
JO  - Structural dynamics
VL  - 8
IS  - 1
SN  - 2329-7778
CY  - Melville, NY
PB  - AIP Publishing LLC
M1  - PUBDB-2021-00319
SP  - 014303 (1-7)
PY  - 2021
AB  - 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
LB  - PUB:(DE-HGF)16
C6  - pmid:33564694
UR  - <Go to ISI:>//WOS:000629733800001
DO  - DOI:10.1063/4.0000049
UR  - https://bib-pubdb1.desy.de/record/453962
ER  -