Toward model-free temperature diagnostics of warm dense matter from multiple scattering angles
Warm dense matter plays an important role in astrophysical objects and technological applications, but the rigorous diagnostics of corresponding experiments is notoriously difficult. In this work, we present a model-free analysis of x-ray Thomson scattering (XRTS) measurements on isochorically heated graphite obtained at the Linac Coherent Light Source at multiple scattering angles. We demonstrate that the recent imaginary-time thermometry technique works for scattering data that have been measured in both forward and backward scattering geometry. This opens up the way toward a rigorous quantification of nonequilibrium effects in future experiments, where XRTS measurements are being obtained from multiple scattering angles from the same sample.
Authors
- L. B. Fletcher (ORCID: https://orcid.org/0000-0002-7120-7194)
- Jan Vorberger (ORCID: https://orcid.org/0000-0001-5926-9192)
- Tobias Dornheim (ORCID: https://orcid.org/0000-0001-7293-6615)
- T. Döppner (ORCID: https://orcid.org/0000-0002-5703-7125)
- B. Bachmann (ORCID: https://orcid.org/0000-0001-7992-0018)
- Thomas R. Preston (ORCID: https://orcid.org/0000-0003-1228-2263)
- Maximilian Böhme (ORCID: https://orcid.org/0000-0003-0290-3628)
- M. J. MacDonald (ORCID: https://orcid.org/0000-0002-6295-6978)
- D. Kraus (ORCID: https://orcid.org/0000-0002-6350-4180)
- Zhandos A. Moldabekov (ORCID: https://orcid.org/0000-0002-9725-9208)
- Thomas Gawne (ORCID: https://orcid.org/0000-0001-9998-3606)
- Hannah M. Bellenbaum (ORCID: https://orcid.org/0009-0006-6530-1017)
Institutions
- Lawrence Livermore National Laboratory (US)
- Helmholtz-Zentrum Dresden-Rossendorf (DE)
- SLAC National Accelerator Laboratory (US)
- Center for Advanced Systems Understanding (DE)
- University of Rostock (DE)
- European X-Ray Free-Electron Laser (DE)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1063/5.0248230
- Citations
- 6
- Primary Topic
- High-pressure geophysics and materials
- Type
- article
- Field-Weighted Citation Impact
- 11.20
Funders
- U.S. Department of Energy
- European Commission
- Bundesministerium für Bildung und Forschung
- European Research Council
- Laboratory Directed Research and Development
- Lawrence Livermore National Laboratory