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  Theory of time-resolved nonresonant x-ray scattering for imaging ultrafast coherent electron motion

Dixit, G., Slowik, J. M., & Santra, R. (2014). Theory of time-resolved nonresonant x-ray scattering for imaging ultrafast coherent electron motion. Physical Review A, 89(4): 043409. doi:10.1103/PhysRevA.89.043409.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-0CC2-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-0CC3-5
Genre: Journal Article

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PhysRevA.89.043409.pdf (Publisher version), 360KB
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PhysRevA.89.043409.pdf
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2014
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© American Physical Society
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http://dx.doi.org/10.1103/PhysRevA.89.043409 (Publisher version)
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https://arxiv.org/abs/1404.0796 (Preprint)
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 Creators:
Dixit, Gopal1, 2, Author
Slowik, Jan Malte1, 2, 3, 4, Author              
Santra, Robin1, 2, 4, Author
Affiliations:
1Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany, ou_persistent22              
2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
4Department of Physics, University of Hamburg, 20355 Hamburg, Germany, ou_persistent22              

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Free keywords: PACS numbers: 32.80.Wr, 61.05.cf, 78.70.Ck
 Abstract: Future ultrafast x-ray light sources might image ultrafast coherent electron motion in real space and in real time. For a rigorous understanding of such an imaging experiment, we extend the theory of nonresonant x-ray scattering to the time domain. The role of energy resolution of the scattering detector is investigated in detail. We show that time-resolved nonresonant x-ray scattering with no energy resolution offers an opportunity to study time-dependent electronic correlations in nonequilibrium quantum systems. Furthermore, our theory presents a unified description of ultrafast x-ray scattering from electronic wave packets and the dynamical imaging of ultrafast dynamics using inelastic x-ray scattering by Abbamonte and co-workers. We examine closely the relation of the scattering signal and the linear density response of electronic wave packets. Finally, we demonstrate that time-resolved x-ray scattering from a crystal consisting of identical electronic wave packets recovers the instantaneous electron density.

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Language(s): eng - English
 Dates: 2014-02-252014-04-142014-04
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevA.89.043409
arXiv: 1404.0796
 Degree: -

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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 89 (4) Sequence Number: 043409 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2