A comparison of radiation transport models for a Ti Z-pinch

One dimensional simulations of titanium (Ti) wire array Z-pinches on the Z generator are compared with experimental data using four models of radiation transport: single and multi-group diffusive transport, tabulated and non-local collisional radiative equilibrium (CRE) transport. While the multi-group diffusion model can reasonably predict the total and K-shell radiative yields, there are significant discrepancies in the plasma properties at implosion between the diffusion approach and data. The present CRE for Ti models match the K-shell yield and the plasma properties, but the total yield increases with the number of emission lines transported.