Experimental investigation of opacity models for stellar interior, inertial fusion, and high energy density plasmas

JE Bailey, GA Rochau, RC Mancini, CA Iglesias… - Physics of …, 2009 - pubs.aip.org
Physical pictures for high energy density HED plasmas rely on models of the plasma
properties. For example, the inner structure of astrophysical plasmas such as stars is often …

A higher-than-predicted measurement of iron opacity at solar interior temperatures

JE Bailey, T Nagayama, GP Loisel, GA Rochau… - Nature, 2015 - nature.com
Nearly a century ago it was recognized that radiation absorption by stellar matter controls
the internal temperature profiles within stars. Laboratory opacity measurements, however …

[HTML][HTML] Hybrid CMOS detectors for high-speed X-ray imaging

JL Porter, Q Looker, L Claus - Review of Scientific Instruments, 2023 - pubs.aip.org
Hybrid CMOS (hCMOS) x-ray framing cameras are a new and powerful detector option for
experiments in the fields of Inertial Confinement Fusion (ICF) and High Energy Density …

Systematic Study of -Shell Opacity at Stellar Interior Temperatures

T Nagayama, JE Bailey, GP Loisel, GS Dunham… - Physical review …, 2019 - APS
The first systematic study of opacity dependence on atomic number at stellar interior
temperatures is used to evaluate discrepancies between measured and modeled iron …

Solar mixture opacity calculations using detailed configuration and level accounting treatments

C Blancard, P Cossé, G Faussurier - The Astrophysical Journal, 2011 - iopscience.iop.org
An opacity model (OPAS) combining detailed configuration and level accounting treatments
has been developed to calculate radiative opacity of plasmas in local thermodynamic …

Equation of state, transport coefficients, and stopping power of dense plasmas from the average-atom model self-consistent approach for astrophysical and laboratory …

G Faussurier, C Blancard, P Cossé, P Renaudin - Physics of Plasmas, 2010 - pubs.aip.org
Calculations of equation of state, transport coefficients, and stopping power of dense
plasmas are presented. Theoretical results have been obtained using the first-principles …

Machine-Learning-Assisted Analysis of Visible Spectroscopy in Pulsed-Power-Driven Plasmas

R Datta, F Ahmed, JD Hare - IEEE Transactions on Plasma …, 2024 - ieeexplore.ieee.org
We use machine-learning (ML) models to predict ion density and electron temperature from
visible emission spectra, in a high-energy density pulsed-power-driven aluminum plasma …

Accretion disk dynamics, photoionized plasmas, and stellar opacities

RC Mancini, JE Bailey, JF Hawley, T Kallman… - Physics of …, 2009 - pubs.aip.org
We present a brief review on the atomic kinetics, modeling and interpretation of
astrophysical observations, and laboratory astrophysics experiments. The emphasis is on …

Conceptual design of initial opacity experiments on the national ignition facility

RF Heeter, JE Bailey, RS Craxton… - Journal of Plasma …, 2017 - cambridge.org
Accurate models of X-ray absorption and re-emission in partly stripped ions are necessary to
calculate the structure of stars, the performance of hohlraums for inertial confinement fusion …

[HTML][HTML] Radiatively cooled magnetic reconnection experiments driven by pulsed power

R Datta, K Chandler, CE Myers, JP Chittenden… - Physics of …, 2024 - pubs.aip.org
We present evidence for strong radiative cooling in a pulsed-power-driven magnetic
reconnection experiment. Two aluminum exploding wire arrays, driven by a 20 MA peak …