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Title: A theoretical and experimental benchmark study of core-excited states in nitrogen

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5011148· OSTI ID:1427025
 [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [5];  [6]; ORCiD logo [7]
  1. Univ. of Oslo (Norway). Hylleraas Centre for Quantum Molecular Sciences, Dept. of Chemistry; Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Chemistry; SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE); Stanford Univ., CA (United States). Dept. of Chemistry
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE)
  3. Johns Hopkins Univ., Baltimore, MD (United States). Department of Chemistry
  4. Synchrotron SOLEIL, Saint-Aubin, Gif-sur-Yvette Cedex (France); Lund Univ. (Sweden). Dept. of Physics
  5. Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Chemistry; Aarhus Univ. (Denmark). Aarhus Inst. of Advanced Studies
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE); Univ. of Potsdam, Potsdam (Germany). Dept. of Physics and Astronomy
  7. Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Chemistry; SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE); Stanford Univ., CA (United States). Dept. of Chemistry

The high resolution near edge X-ray absorption fine structure spectrum of nitrogen displays the vibrational structure of the core-excited states. This makes nitrogen well suited for assessing the accuracy of different electronic structure methods for core excitations. We report high resolution experimental measurements performed at the SOLEIL synchrotron facility. These are compared with theoretical spectra calculated using coupled cluster theory and algebraic diagrammatic construction theory. The coupled cluster singles and doubles with perturbative triples model known as CC3 is shown to accurately reproduce the experimental excitation energies as well as the spacing of the vibrational transitions. In conclusion, the computational results are also shown to be systematically improved within the coupled cluster hierarchy, with the coupled cluster singles, doubles, triples, and quadruples method faithfully reproducing the experimental vibrational structure.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; German National Academy of Sciences Leopoldina
Grant/Contract Number:
AC02-76SF00515; 639508; 609033
OSTI ID:
1427025
Journal Information:
Journal of Chemical Physics, Vol. 148, Issue 6; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (2)

An efficient first principles method for molecular pump-probe NEXAFS spectra: Application to thymine and azobenzene journal October 2018
Coupled cluster study of the x-ray absorption spectra of formaldehyde derivatives at the oxygen, carbon, and fluorine K-edges journal August 2019

Figures / Tables (12)


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