A bright, ultrashort X-ray pulse is used to transiently create and characterize warm dense copper. As the pulse intensity is increased, the opacity of copper is strongly altered. The recorded X-ray absorption spectra, substantiated by a theoretical electronic structure model, provide insight into the non-equilibrium electron dynamics during the formation of warm dense matter.
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References
Young, L. et al. Femtosecond electronic response of atoms to ultra-intense X-rays. Nature 466, 56–61 (2010). This paper reports on nonlinear X-ray–matter interactions.
Nagler, B. et al. Turning solid aluminium transparent by intense soft X-ray photoionization. Nat. Phys. 5, 693–696 (2009). This paper reports a pioneering transient absorption XFEL experiment.
Vinko, S. M. et al. Creation and diagnosis of a solid-density plasma with an X-ray free-electron laser. Nature 482, 59–62 (2012). This paper reports an experiment on WDM created by an XFEL.
Dorchies, F. & Recoules, V. Non-equilibrium solid-to-plasma transition dynamics using XANES diagnostic. Phys. Rep. 657, 1–26 (2016). This review discusses how X-ray absorption spectroscopy can provide insight into non-equilibrium WDM.
Bailey, J. et al. A higher-than-predicted measurement of iron opacity at solar interior temperatures. Nature 517, 56–59 (2015). A paper on iron opacity that reports discrepancies between experimental measurements and theoretical predictions.
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This is a summary of: Mercadier, L. et al. Transient absorption of warm dense matter created by an X-ray free-electron laser. Nat. Phys. https://doi.org/10.1038/s41567-024-02587-w (2024).
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Nonlinear absorption of an X-ray pulse during the formation of warm dense matter. Nat. Phys. (2024). https://doi.org/10.1038/s41567-024-02594-x
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DOI: https://doi.org/10.1038/s41567-024-02594-x