WFRF:(Gaffney K J)
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- McFarland, B. K. (author)
Ultrafast X-ray Auger probing of photoexcited molecular dynamics
- Article/chapterEnglish2014
Publisher, publication year, extent ...
- 2014-06-23
- Springer Science and Business Media LLC,2014
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-229972
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229972URI
- https://doi.org/10.1038/ncomms5235DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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- 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 pi pi* 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 n pi* state.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
Added entries (persons, corporate bodies, meetings, titles ...)
- Farrell, J. P. (author)
- Miyabe, S. (author)
- Tarantelli, F. (author)
- Aguilar, A. (author)
- Berrah, N. (author)
- Bostedt, C. (author)
- Bozek, J. D. (author)
- Bucksbaum, P. H. (author)
- Castagna, J. C. (author)
- Coffee, R. N. (author)
- Cryan, J. P. (author)
- Fang, L. (author)
- Feifel, RaimundUppsala universitet,Molekyl- och kondenserade materiens fysik(Swepub:uu)rfe32143 (author)
- Gaffney, K. J. (author)
- Glownia, J. M. (author)
- Martinez, T. J. (author)
- Mucke, MelanieUppsala universitet,Molekyl- och kondenserade materiens fysik(Swepub:uu)melmu186 (author)
- Murphy, B. (author)
- Natan, A. (author)
- Osipov, T. (author)
- Petrovic, V. S. (author)
- Schorb, S. (author)
- Schultz, Th. (author)
- Spector, L. S. (author)
- Swiggers, M. (author)
- Tenney, I. (author)
- Wang, S. (author)
- White, J. L. (author)
- White, W. (author)
- Guehr, M. (author)
- Uppsala universitetMolekyl- och kondenserade materiens fysik (creator_code:org_t)
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- In:Nature Communications: Springer Science and Business Media LLC5, s. 4235-2041-1723
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- McFarland, B. K.
- Farrell, J. P.
- Miyabe, S.
- Tarantelli, F.
- Aguilar, A.
- Berrah, N.
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- Bostedt, C.
- Bozek, J. D.
- Bucksbaum, P. H.
- Castagna, J. C.
- Coffee, R. N.
- Cryan, J. P.
- Fang, L.
- Feifel, Raimund
- Gaffney, K. J.
- Glownia, J. M.
- Martinez, T. J.
- Mucke, Melanie
- Murphy, B.
- Natan, A.
- Osipov, T.
- Petrovic, V. S.
- Schorb, S.
- Schultz, Th.
- Spector, L. S.
- Swiggers, M.
- Tenney, I.
- Wang, S.
- White, J. L.
- White, W.
- Guehr, M.
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