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Journal Article

Reabsorption of soft x-ray emission at high x-ray free-electron laser fluences.

MPS-Authors
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Kubicek,  K.
Research Group of Structural Dynamics of (Bio)chemical Systems, MPI for biophysical chemistry, Max Planck Society;

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Techert,  S.
Research Group of Structural Dynamics of (Bio)chemical Systems, MPI for biophysical chemistry, Max Planck Society;

Fulltext (public)

2052609.pdf
(Publisher version), 594KB

Supplementary Material (public)

2052609_Suppl.pdf
(Supplementary material), 2MB

Citation

Schreck, S., Beye, M., Sellberg, J. A., McQueen, T., Laksmono, H., Kennedy, B., et al. (2014). Reabsorption of soft x-ray emission at high x-ray free-electron laser fluences. Physical Review Letters, 113(15): 153002. doi:10.1103/PhysRevLett.113.153002.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0023-C3C6-6
Abstract
We report on oxygen K-edge soft x-ray emission spectroscopy from a liquid water jet at the Linac Coherent Light Source. We observe significant changes in the spectral content when tuning over a wide range of incident x-ray fluences. At high fluences, also the total emission yield decreases. These modifications result from reabsorption of x-ray emission by valence-excited molecules generated by the Auger cascade. Our observations have major implications for future x-ray emission studies at intense x-ray sources. We highlight the importance of the x-ray pulse length with respect to the core-hole lifetime.