Predicting Areal Density Degradation caused by Preheat from Hot Electrons Generated by the Two-Plasmon Decay Instability

Accurately determining the areal density ρR in inertial confinement fusion (ICF) implosions is essential for the effective design and optimization of experiments. One significant challenge in this process has been predicting the impact from hot-electron preheat caused by the Two-Plasmon Decay (TPD) instability, a well-known degradation mechanism. In this work, we introduce a method to determine this effect by integrating a recently developed scaling model for TPD-driven hot-electron (Ref. [1]) generation with a well-established model for ρR preheat degradation (Ref. [2]). This approach was applied to a database of DT cryogenic implosions, enabling comparisons between measured ρR values and predictions based on this new model. The results provide new insights into the interplay between anticipated preheat effects and experimental performance, offering a framework for improving target designs and experimental outcomes in ICF research.