Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 10, Issue 1, Pages 52-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.8b03420
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Funding
- Leibniz Gemeinschaft [SAW-2016-MBI-1]
- LASERLAB-EUROPE [654148, MBI002442]
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We demonstrate the feasibility of soft X-ray absorption spectroscopy in the water window using a table-top laser-based approach with organic molecules and inorganic salts in aqueous solution. A high-order harmonic source delivers femtosecond pulses of short wavelength radiation in the photon energy range from 220 to 450 eV. We report static soft X-ray absorption measurements in transmission on the solvated compounds O=C(NH2)(2), CaCl2, and NaNO3 using flatjet technology. We monitor the absorption of the molecular samples between the carbon (similar to 280 eV) and nitrogen (similar to 400 eV) K-edges and compare our results with previous measurements performed at the BESSYTI facility. We discuss the roles of pulse stability and photon flux in the outcome of our experiments. Our work paves the way toward table-top femtosecond, solution-phase soft X-ray absorption spectroscopy in the water window.
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