Investigating the impact of equation of state uncertainties on direct-drive inertial fusion energy simulations

直接驱动惯性聚变能1 (IFE) 需要将高能激光聚焦在球形目标上。目标的外部材料（通常是塑料）烧蚀，导致核心氘氚 (DT) 燃料发生内爆。为了设计有效的未来实验并解释以前的实验，需要准确的预测计算建模能力。这必须包括对不确定性的来源和程度的正式理解。该项目将研究由所使用的状态方程引起的直接驱动 IFE 计算的不确定性。该项目的主要成果将是一个不确定性量化（UQ）框架，该框架也可以应用于其他不确定性领域，例如不透明度、发射率和热传输。

Direct-drive inertial fusion energy1 (IFE) requires high-energy lasers to be focussed on a spherical target. The outer material of the target (usually plastic) ablates, driving an implosion of the core deuterium-tritium (DT) fuel. To design efficient future experiments and interpret previous ones an accurate and predictive computational modelling capability is required. This must include a formal understanding of the sources and magnitudes of uncertainty. This project will investigate the uncertainty in direct-drive IFE calculations arising from the equations-of-state used. The primary outcome of the project will be an uncertainty quantification (UQ) framework that could also be applied to other areas of uncertainty, such as opacity, emissivity and thermal transport.