Analysis methods for slit-imaged line spectra from argon-doped implosion cores at Z

The availability of time-resolved slit-imaged X-ray line spectra from argon-doped deuterium-filled implosion cores driven by z-pinch dynamic-hohlraums at the Z facility, creates an opportunity for developing new spectroscopic diagnostics of the core. The combination of broad-range X-ray line spectra with high-spectral-resolution, and spatial- and time-resolution provides information for unfolding the temperature and density spatial-structure of the core. Analysis methods are discussed based on using spatially-resolved spectral lineouts that correspond to a spatial-integration over core slices. Alternatively, a set of narrow-spectral-band slit-image intensity spatial-profiles can also be used for analysis. Results are illustrated for argon K-shell spectra recorded with framed crystal spectrometers equipped with space-resolving slits that afforded up to 0.3 ns of time- and 50 $\mu $m of space-resolution, and covered the He$\alpha $ to Ly$\gamma $ lines spectral range with a spectral resolution power of 1000. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. Dept. of Energy.