An improved methodology for modeling short pulse buried layer x-ray emission spectra

Cliche, D. T.; Martin, M. E.; London, R. A.; Scott, H. A.; Patel, M. V.

doi:10.1016/j.cpc.2024.109168

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An improved methodology for modeling short pulse buried layer x-ray emission spectra

Cliche, D. T.·Martin, M. E.·London, R. A.·Scott, H. A.·Patel, M. V.

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Abstract

Radiation-hydrodynamic and spectroscopic modeling are important aspects of high energy density experimental design. In this paper, we improve the performance and capabilities over those obtainable with a previous methodology used for simulating x-ray emission spectra from buried layer targets heated by short pulse lasers. The improvement incorporates post-processing HYDRA radiation-hydrodynamic output with a non-local thermodynamic equilibrium atomic-kinetics radiation transport code, Cretin. Each code uses an independent radiation field which allows decoupling HYDRA's radiation group structure from Cretin's spectral output to improve the speed and flexibility of the design methodology. The execution time decreases from 2–3 days to a few hours while the flexibility of the improved methodology allows for performing sensitivity studies including a comparison of steady-state and time-dependent atomic kinetics and differences in the radiation group structure.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY atomic kinetics modeling methodology radiation-hydrodynamics spectroscopy

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Cliche, D. T., Martin, M. E., London, R. A., Scott, H. A., Patel, M. V.. 2024-03-15. An improved methodology for modeling short pulse buried layer x-ray emission spectra. https://doi.org/10.1016/j.cpc.2024.109168

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