X-ray yields simulations of gas puff experiments with ALEGRA

ALEGRA is 3D RMHD arbitrary Lagrangian-Eulerian finite element code, originally developed to study shock physics. Recently, we have started to use it to perform 2D radiation-MHD simulations of gas puffs and the results of these calculations will be presented. The measured yield and timing of x-ray pulses are compared with our modeling results in order to test the code. The plasma is treated as optically thin by employing a collisional radiative equilibrium (CRE) model, used to assess the code ability to predict radiation output. We find that the calculations give both timing and k-shell radiation yield in reasonable agreement with experimental measurements.