Modeling conditions of radiative heat waves in the Xflows NIF experiment
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Feinberg, Eli Matthew↗
Engineering topics
Fontes, Christopher John
Publications and source records attributed to Fontes, Christopher John.
FY2024 Q4 L2 Milestone 8237 for Opacity-on-NIF
This document addresses parts 2 and 3 of the original milestone request. In the following writeup, the development of OpSpecTR at LLNL by LLNL and NNSS personnel will be detailed first, followed by a write-up of the development of Vme-resolved simulaVons of the opacity-on-NIF experiment. Capsule backlight simulaVons, hohlraum simulaVons, and sample simulaVons from CASSIO are combined to produce the line of sight from the capsule to an effecVve OpSpec posiVon. Spectra are generated by post-processing these simulaVons from either Spect3D, a commercial software by Prism ComputaVonal Sciences, or FESTR (Finite Element Spectroscopic Transport of RadiaVon), a LANL code. While the simulaVons do not at this stage proceed late enough to include the worst of the backgrounds generated from the hohlraum experimentally and each post-processing simulaVon includes only one ray for each spectrometer channel, these efforts represent proof of concept for a new capability to complete Vme-resolved and Vmegated simulaVons for the complete line of sight of the complex opacity-on-NIF geometry. Future work will be discussed at the end of the report for both efforts.
42 ENGINEERING↗
A spectroscopic analysis code for spatially-resolved X-ray absorption data from the COAX platform
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70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗