Hohlraum models applied to suite of HDC capsule experiments*

For several years we have been working toward hohlraum models that are more predictive and require fewer ad hoc adjustments to match experimental observables [1]. We generally find that the results are most sensitive to the model choices for non-LTE atomic physics, electron thermal transport, cross beam energy transport, and the self-consistent treatment of any backscattered light. In this work, we apply a model with very restricted electron thermal transport (flux-limited transport in wall material with FL = 0.02) to a broad set of experiments using HDC ablator capsules. These experiments include shock timing experiments, symmetry capsules, and DT layered implosions. The primary observables we compare to are the capsule bang time, capsule yield, radiation drive and spectrum (from Dante), and the drive symmetry (as inferred from the inflight shell shape and the final self-emission x-ray shape). For a limited number of experiments, we also compare the plasma temperature and the relative brightness of the inner beam spots (via thin wall hohlraums).

[1] O.S. Jones, et al., Phys. Plasmas 24, 056312 (2017).