Demonstration of an x-ray Raman spectroscopy setup to study warm dense carbon at the high energy density instrument of European XFEL

0544573 - FZÚ 2022 RIV US eng J - Journal Article
Voigt, K. - Zhang, M. - Ramakrishna, K. - Amouretti, A. - Appel, K. - Brambrink, E. - Cerantola, V. - Chekrygina, D. - Doeppner, T. - Falcone, R.W. - Falk, Kateřina - Fletcher, L. B. - Gericke, D.O. - Goede, S. - Harmand, M. - Hartley, N.J. - Hau-Riege, S.P. - Huang, L.G. - Humphries, O.S. - Lokamani, M. - Makita, M. - Pelka, A. - Prescher, C. - Schuster, A.K. - Šmíd, M. - Toncian, T. - Vorberger, J. - Zastrau, U. - Preston, T.R. - Kraus, D.
Demonstration of an x-ray Raman spectroscopy setup to study warm dense carbon at the high energy density instrument of European XFEL.
Physics of Plasmas. Roč. 28, č. 8 (2021), č. článku 082701. ISSN 1070-664X. E-ISSN 1089-7674
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Institutional support: RVO:68378271
Keywords : X-ray Raman spectroscopy * instrument of European XFEL * warm dense carbon study at high energy density
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.357, year: 2021
Method of publishing: Open access

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.
Permanent Link: http://hdl.handle.net/11104/0321418