Spectroscopic analysis of temperature, density and mixing spatial profiles in OMEGA implosion cores

The spectroscopic analysis of simultaneous X-ray narrow-band images and X-ray line spectra recorded in argon-doped deuterium-filled ICF implosion experiments can yield information about the temperature, density and mixing spatial profiles in the compressed core. We discuss analysis results from indirect- and direct-drive implosion experiments at OMEGA where X-ray images and line spectra were simultaneously recorded. The images were recorded with several, identical multi-monochromatic imaging instruments that recorded data along quasi-orthogonal lines of sight. The analysis method considers data based on the argon Ly$\alpha $, He$\beta $, and Ly$\beta $ spectral features and their associated Li- and He-like satellite structure. Extracted profiles are compared with gradients from hydrodynamic simulations of the implosion, and results from a passive mixing model. This work is supported by DOE-NLUF Grant DE-FG03-03SF22696, and LLNL.