Authors
A J Fairchild, D T Bishel, T Cordova, H Flores-Alimboyoguen, M F Gu, P Hamilton, N Hell, M J MacDonald, E W Magee, R C Mancini, E V Marley, R Shepherd, G V Brown
Published in
The Review of scientific instruments. Volume 97. Issue 10. Oct 01, 2026.
Abstract
We are developing an experimental platform at Lawrence Livermore National Laboratory's Jupiter Laser Facility to characterize x-ray emission from highly charged ions in the high-density (ne > 1023 cm-3), high-temperature (Te ∼ 1 keV) regime, leveraging the recently upgraded frequency-doubled short-pulse Titan laser. These measurements will provide experimental benchmarks for high electron density effects on atomic structure, including Stark broadening, ionization potential depression, density-dependent line shifts, and suppression of dielectronic recombination, effects that are relevant to spectral modeling packages used by both the high-energy-density and astrophysics communities. Here, we describe the current status of the platform and present results from first experiments using the upgraded frequency-doubling capability, including calibrated K-shell spectra acquired from five time-integrated x-ray channels. Comparisons with multi-electron radiator line shape calculations and with spectra recorded at the atomic weapons establishment's Orion Laser Facility indicate that the upgraded Titan laser reliably produces the necessary plasma conditions, establishing a foundation for systematic benchmarking of high-density atomic physics in future campaigns.
PMID:
42825674
Bibliographic data and abstract were imported from PubMed on 02 Oct 2026.
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