Demonstration of an x-ray Raman spectroscopy setup to study warm dense carbon at the high energy density instrument of European XFEL
| Autor: | T. Toncian, M. Zhang, Clemens Prescher, Dirk O. Gericke, Sebastian Göde, M. Lokamani, D. Chekrygina, M. Makita, Roger Falcone, A. Pelka, Stefan P. Hau-Riege, K. Voigt, T. R. Preston, N. J. Hartley, Marion Harmand, Dominik Kraus, L. G. Huang, Oliver Humphries, Kushal Ramakrishna, Valerio Cerantola, A. K. Schuster, Tilo Döppner, Erik Brambrink, Karen Appel, Ulf Zastrau, Katerina Falk, Luke Fletcher, Michal Smid, A. Amouretti, Jan Vorberger |
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| Přispěvatelé: | Voigt, K, Zhang, M, Ramakrishna, K, Amouretti, A, Appel, K, Brambrink, E, Cerantola, V, Chekrygina, D, Döppner, T, Falcone, R, Falk, K, Fletcher, L, Gericke, D, G??de, S, Harmand, M, Hartley, N, Hau-Riege, S, Huang, L, Humphries, O, Lokamani, M, Makita, M, Pelka, A, Prescher, C, Schuster, A, Šmíd, M, Toncian, T, Vorberger, J, Zastrau, U, Preston, T, Kraus, D, Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Brightness
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] engineering.material 01 natural sciences 7. Clean energy 010305 fluids & plasmas law.invention symbols.namesake law XRS warm dense carbon 0103 physical sciences ddc:530 Spectral resolution 010306 general physics [PHYS]Physics [physics] Physics Spectrometer XFEL Diamond inelastic scattering Warm dense matter Condensed Matter Physics Laser Computational physics engineering symbols Raman spectroscopy Annealed pyrolytic graphite |
| Zdroj: | Physics of plasmas 28(8), 082701 (2021). doi:10.1063/5.0048150 Physics of Plasmas Physics of Plasmas, American Institute of Physics, 2021, 28 (8), pp.082701. ⟨10.1063/5.0048150⟩ Physics of Plasmas, 2021, 28 (8), pp.082701. ⟨10.1063/5.0048150⟩ Physics of Plasmas 28(2021), 082701 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | International audience; We present a proof-of-principle study demonstrating x-ray Raman Spectroscopy (XRS) from carbon samples at ambient conditions in conjunction with other common diagnostics to study warm dense matter, performed at the high energy density scientific instrument of the European x-ray Free Electron Laser (European XFEL). We obtain sufficient spectral resolution to identify the local structure and chemical bonding of diamond and graphite samples, using highly annealed pyrolytic graphite spectrometers. Due to the high crystal reflectivity and XFEL brightness, we obtain signal strengths that will enable accurate XRS measurements in upcoming pump-probe experiments with a high repetition-rate, where the samples will be pumped with high-power lasers. Molecular dynamics simulations based on density functional theory together with XRS simulations demonstrate the potential of this technique and show predictions for high-energy-density conditions. Our setup allows simultaneous implementation of several different diagnostic methods to reduce ambiguities in the analysis of the experimental results, which, for warm dense matter, often relies on simplifying model assumptions. The promising capabilities demonstrated here provide unprecedented insights into chemical and structural dynamics in warm dense matter states of light elements, including conditions similar to the interiors of planets, low-mass stars, and other celestial bodies. |
| Databáze: | OpenAIRE |
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