Spectroscopic signatures of Co-doped liners in a Magnetized Liner Inertial Fusion implosion at Z

Simulations of Magnetized Liner Inertial Fusion (MagLIF) experiments suggest that there is a negligible amount of liner material mixed into the core during the compression of the deuterium fuel. However, spectroscopic observations show evidence of x-ray line emission from highly ionized cobalt (Co) that was originally doped into the beryllium liner. In an experiment at the Z pulsed power machine, a beryllium liner doped with 0.91% Co and filled with deuterium gas was imploded by a 20 MA current to assess the mixing of liner material into the fuel. To this end, spatially resolved x-ray line spectra and monochromatic images were recorded. The XRS3 axially resolving spectrometer collected Co K-shell line emission and the CHEWI3 monochromatic x-ray imager surveyed Co radiation from the plasma column. The spectra and imaging data recorded in the experiment show significant Co emission from the implosion core. We will discuss the data as well as the analysis methods being developed to extract plasma conditions and mixing in the deuterium fuel.