Three dimensional time-dependent hydrodynamic and propagation modeling of x-ray laser emission.

摘要

We have carried out three dimensional time-dependent calculations of x-ray emission in exploding foil line focus produced plasmas relevant to neon-like yttrium experiments at the Lawrence Livermore National Laboratory (LLNL). Hydrodynamic simulations using LASNEX and a simple gain profile based on XRASER are input into CASER, which solves the radiation transport equation along three dimensional ray orbits. Experimental observables such as farfield patterns and x-ray signal vs. laser length are then computed and compared with experiment. Similar two dimensional calculations have also been performed using the wave optics code WAVE to calculate coherence and confirm the accuracy of the ray optics treatment. We have found good agreement between both experiment and simulation and between the ray and wave optics codes. (ERA citation 18:025327)