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001     619702
005     20241222111847.0
024 7 _ |2 arXiv
|a arXiv:2102.13431
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088 _ _ |2 arXiv
|a arXiv:2102.13431
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|a Mayer, D.
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245 _ _ |a Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy
260 _ _ |c 2021
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|a ARTICLE
336 7 _ |2 DataCite
|a Output Types/Working Paper
520 _ _ |a The conversion of photon energy into other energetic forms in molecules is accompanied by charge moving on ultrafast timescales. We directly observe the charge motion at a specific site in an electronically excited molecule using time-resolved x-ray photoelectron spectroscopy (TR-XPS). We extend the concept of static chemical shift from conventional XPS by the excited-state chemical shift (ESCS), which is connected to the charge in the framework of a potential model. This allows us to invert TR-XPS spectra to the dynamic charge at a specific atom. We demonstrate the power of TR-XPS by using sulphur 2p-core-electron-emission probing to study the UV-excited dynamics of 2-thiouracil. The new method allows us to discover that a major part of the population relaxes to the molecular ground state within 220-250 fs. In addition, a 250-fs oscillation, visible in the kinetic energy of the TR-XPS, reveals a coherent exchange of population among electronic states.
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536 _ _ |0 G:(EU-Grant)637756
|a STARLIGHT - Steering attosecond electron dynamics in biomolecules with UV-XUV LIGHT pulses (637756)
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700 1 _ |a Lever, F.
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700 1 _ |0 P:(DE-H253)PIP1112362
|a Picconi, David
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|e Corresponding author
700 1 _ |a Metje, J.
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|a Alisauskas, S.
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|a Calegari, F.
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700 1 _ |a Ehlert, C.
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700 1 _ |a Feifel, R.
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700 1 _ |a Niebuhr, M.
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700 1 _ |a Manschwetus, B.
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700 1 _ |a Kuhlmann, M.
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700 1 _ |a Mazza, T.
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700 1 _ |a Robinson, M. S.
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700 1 _ |a Squibb, R. J.
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700 1 _ |a Trabattoni, A.
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700 1 _ |a Wallner, M.
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700 1 _ |a Saalfrank, P.
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700 1 _ |a Gühr, M.
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856 4 _ |u https://arxiv.org/abs/2102.13431
856 4 _ |u https://bib-pubdb1.desy.de/record/619702/files/2102.13431v2.pdf
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