Cited by 161Laser-Matter Interactions and ApplicationsX-ray Spectroscopy and Fluorescence AnalysisAdvanced X-ray Imaging Techniques

Ultrafast X-ray Auger probing of photoexcited molecular dynamics

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McFarland, B. K., Farrell, J. P., Miyabe, S., Tarantelli, F., Aguilar, A., Berrah, N., Bostedt, C., Bozek, J. D. +23 more·2014·Nature Communications

Abstract

Molecules can efficiently and selectively convert light energy into other degrees of freedom. Disentangling the underlying ultrafast motion of electrons and nuclei of the photoexcited molecule presents a challenge to current spectroscopic approaches. Here we explore the photoexcited dynamics of molecules by an interaction with an ultrafast X-ray pulse creating a highly localized core hole that decays via Auger emission. We discover that the Auger spectrum as a function of photoexcitation--X-ray-probe delay contains valuable information about the nuclear and electronic degrees of freedom from an element-specific point of view. For the nucleobase thymine, the oxygen Auger spectrum shifts towards high kinetic energies, resulting from a particular C-O bond stretch in the ππ* photoexcited state. A subsequent shift of the Auger spectrum towards lower kinetic energies displays the electronic relaxation of the initial photoexcited state within 200 fs. Ab-initio simulations reinforce our interpretation and indicate an electronic decay to the nπ* state.

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  • A longstanding controversy over the detailed photoprotection mechanisms of nucleobases was resolved through a combination of femtosecond Auger spectroscopy and time-resolved x-ray absorption.

    “A longstanding controversy over the detailed photoprotection mechanisms of nucleobases was resolved through a combination of femtosecond Auger spectroscopy and time-resolved x-ray absorption [16].”

    From Roadmap of ultrafast x-ray atomic and molecular physics (2018) · cites this paper as [16]

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  1. Rescigno, T. N., Lengsfield, B. H. & McCurdy, C. W. in Modern Electronic Structure Theory. (ed. Yarkony, D. R.) Vol. 1 (World Scientific, 1995).

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Authors
McFarland, B. K., Farrell, J. P., Miyabe, S., Tarantelli, F., Aguilar, A., Berrah, N., Bostedt, C., Bozek, J. D., Bucksbaum, P. H., Castagna, J. C., Coffee, R. N., Cryan, J. P., Fang, L., Feifel, R., Gaffney, K. J., Glownia, J. M., Martinez, T. J., Mucke, M., Murphy, B., Natan, A., Osipov, T., Petrović, V. S., Schorb, S., Schultz, T., Spector, L. S., Swiggers, M., Tenney, I., Wang, S., White, J. L., White, W., & Gühr, M.
Affiliations
  • SLAC National Accelerator Laboratory (US)
  • University of Perugia (IT)
  • Lawrence Berkeley National Laboratory (US)
  • University of Connecticut (US)
  • Western Michigan University (US)
  • Uppsala University (SE)
Corresponding author
Gühr, M.
Venue
Nature Communications
Published
2014-06-23
Volume
5
Issue
1
Pages
4235-4235
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2035280333
Cited by
161
References
50
Citations by year
2026: 2 · 2025: 6 · 2024: 8 · 2023: 11 · 2022: 14 · 2021: 10 · 2020: 13 · 2019: 9 · 2018: 20 · 2017: 17 · 2016: 22 · 2015: 24 · 2014: 5
FWCI
11.28
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Scholarworks@UNIST (Ulsan National Institute of Science and Technology) (submittedVersion)
Funders
  • U.S. Department of Energy (-AC02-05CH11231, Contract No. DE-AC02-05-CH11231, 05CH11231, No. DE-AC02-05-CH11231, DE AC02 05CH11231, DE-AC02-)
  • Knut och Alice Wallenbergs Stiftelse
  • Vetenskapsrådet
  • Office of Science (No. DE-AC02- 05-CH11231, DEAC02–05CH11231, AC02-05CH11231, DE-AC02, Contract No. DE-AC02-05CH11231)
  • Basic Energy Sciences (DE-AC02, Contract No. DE-AC02-05-CH11231, DE-AC02-05CH11231., No. DE-AC02-05-CH11231, AC02–05CH11231)
  • Chemical Sciences, Geosciences, and Biosciences Division (DE-AC0205CH11231)
  • SLAC National Accelerator Laboratory (DE-AC02-05-CH11231)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
  • Physical Sciences › Physics and Astronomy › Radiation › X-ray Spectroscopy and Fluorescence Analysis
  • Physical Sciences › Physics and Astronomy › Radiation › Advanced X-ray Imaging Techniques
Keywords
X-ray pump-probe, core hole, thymine, ππ* excited states, electronic relaxation, nπ* states, NMR relaxation, ultrafast electron dynamics

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