X-Ray Thomson Scattering and Radiography from Imploding Diamond Spheres on the OMEGA Laser*

X-ray Thomson scattering (XRTS) is an experimental technique that directly probes the physics of warm dense matter by measuring electron density, electron temperature, and ionization state [1]. XRTS in combination with x-ray radiography offers a unique ability to measure the equation of state of material under compression [1,2]. We present XRTS and x-ray radiography measurements taken at the OMEGA Laser Facility from directly-driven solid diamond spheres. We use the radiography data to generate post-shot radiation hydrodynamics simulations that match the observed implosion trajectory. We then use the XRTS data in combination with the benchmarked simulations to constrain the ionization state of up to three-times compressed diamond at temperatures of up to 10 eV.

[1]  S. H. Glenzer and R. Redmer. Rev. Mod. Phys. 81, 1625 (2009).

[2]  A. L. Kritcher et al., J. Phys. Conf., 688, 102055 (2016).