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  Stimulated resonant x-ray Raman scattering with incoherent radiation

Weninger, C., & Rohringer, N. (2013). Stimulated resonant x-ray Raman scattering with incoherent radiation. Physical Review A, 88(5): 053421. doi:10.1103/PhysRevA.88.053421.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-E27E-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-E27F-F
Genre: Journal Article

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PhysRevA.88.053421.pdf (Publisher version), 3MB
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2013
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http://dx.doi.org/10.1103/PhysRevA.88.053421 (Publisher version)
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 Creators:
Weninger, Clemens1, 2, 3, Author              
Rohringer, Nina1, 2, Author              
Affiliations:
1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              
2Center for Free Electron Laser Science, 22607 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              

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Free keywords: PACS numbers: 33.35.+r, 33.20.Xx
 Abstract: We present a theoretical study on stimulated electronic Raman scattering in neon by resonant excitation with an x-ray free electron laser (XFEL). This study is in support of the recent experimental demonstration [C. Weninger et al., Phys. Rev. Lett. (to be published)] of stimulated x-ray Raman scattering. Focusing the broadband XFEL pulses into a cell of neon gas at atmospheric pressure a strong inelastic x-ray scattering signal in the forward direction was observed, as the x-ray energy was varied across the region of core-excited Rydberg states and the K edge. The broadband and intrinsically incoherent x-ray pulses from the XFEL lead to a rich, structured line shape of the scattered radiation. We present a generalized Maxwell-Liouville–von Neumann approach to self-consistently solve for the amplification of the scattered radiation along with the time evolution of the density matrix of the atomic and residual ionic system. An in-depth analysis of the evolution of the emission spectra as a function of the Raman gain is presented. Furthermore, we propose the use of statistical methods to obtain high-resolution scattering data beyond the lifetime broadening despite pumping with incoherent x-ray pulses.

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Language(s): eng - English
 Dates: 2013-10-102013-11-212013-11
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevA.88.053421
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Title: Physical Review A
Source Genre: Journal
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Pages: - Volume / Issue: 88 (5) Sequence Number: 053421 Start / End Page: - Identifier: ISSN: 1050-2947