Review of the 10th Non-LTE Code Comparison Workshop

TL;DR

This paper reviews the outcomes of the 10th Non-LTE code comparison workshop, highlighting differences in code predictions for plasma diagnostics in high-energy-density experiments and astrophysical systems.

Contribution

It provides a comprehensive comparison of fifteen Non-LTE codes, analyzing their differences and impacts on plasma diagnostics in various high-density scenarios.

Findings

Significant variations in code predictions for electronic state populations.

Differences in internal structure and rate fidelity affect diagnostic accuracy.

Highlighting the need for standardized modeling approaches.

Abstract

We report on the results of the 10th Non-LTE code comparison workshop, which was held at the University of San Diego campus November 28 through December 1, 2017. Non-equilibrium collisional-radiative models predict the electronic state populations and attendant emission and absorption characteristics of hot, dense matter and are used to help design and diagnose high-energy-density experiments. At this workshop, fifteen codes from eleven institutions contributed results for steady-state and time-dependent neon, aluminum, silicon, and chlorine cases relevant to a variety of high-density experimental and radiation-driven astrophysical systems. This report focuses on differences in the predictions from codes with different internal structure, completeness, density effects, and rate fidelity and the impact of those differences on hot, dense plasma diagnostics.