Dynamics of femtosecond heated warm dense copper with time-resolved L3-edge XANES - Archive ouverte HAL
Article Dans Une Revue Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Année : 2023

Dynamics of femtosecond heated warm dense copper with time-resolved L3-edge XANES

Résumé

Combining experimental set up and ab initio molecular dynamics simulations, we were able to follow the time evolution of the X-ray absorption near edge spectrum (XANES) of a dense copper plasma. This provides a deep insight into femtosecond laser interaction with a metallic copper target. This paper presents a review of the experimental developments we made to reduce the X-ray probe duration, from approximately 10 ps to fs duration with table-top laser systems. Moreover, we present microscopic scale simulations, performed with Density Functional Theory, as well as macroscopic simulations considering the Two-Temperature Model. These tools allow us to get a complete picture of the evolution of the target at a microscopic level, from the heating process to the melting and expansion stages, with a clear view of the physics involved during these processes. This article is part of the theme issue ‘Dynamic and transient processes in warm dense matter’.
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Dates et versions

hal-04156268 , version 1 (07-07-2023)

Identifiants

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Ludovic Lecherbourg, Vanina Recoules, Patrick Renaudin, Fabien Dorchies. Dynamics of femtosecond heated warm dense copper with time-resolved L3-edge XANES. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023, 381, pp.20220214. ⟨10.1098/rsta.2022.0214⟩. ⟨hal-04156268⟩
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