Core-Level Spectroscopy of 2-Thiouracil at the Sulfur L1- and L2,3-Edges Utilizing a SASE Free-Electron Laser
- Universität Potsdam (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany)
- Gothenburg University (Sweden)
- European XFEL, Schenefeld (Germany)
- Universität Potsdam (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE)
In this paper, we report X-ray absorption and core-level electron spectra of the nucleobase derivative 2-thiouracil at the sulfur L1- and L2,3-edges. We used soft X-rays from the free-electron laser FLASH2 for the excitation of isolated molecules and dispersed the outgoing electrons with a magnetic bottle spectrometer. We identified photoelectrons from the 2p core orbital, accompanied by an electron correlation satellite, as well as resonant and non-resonant Coster–Kronig and Auger–Meitner emission at the L1- and L2,3-edges, respectively. We used the electron yield to construct X-ray absorption spectra at the two edges. The experimental data obtained are put in the context of the literature currently available on sulfur core-level and 2-thiouracil spectroscopy.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- Volkswagen Foundation; Federal Ministry of Education and Research (BMBF); German Research Foundation (DFG); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; European Research Council (ERC); Swedish Research Council (VR); Knut and Alice Wallenberg Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515; GU 1478/1-1; 637756; NA
- OSTI ID:
- 1828079
- Alternate ID(s):
- OSTI ID: 1877676; OSTI ID: 1878586
- Journal Information:
- Molecules, Vol. 26, Issue 21; ISSN 1420-3049
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
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