102 citations · 466 across the 48 of their papers we have counts for
26 papers · 1 filter
Informing spectral models for dense plasmas with K-edge absorption measurements of warm dense copper
T. Cordova, E. V. Marley, D. A. Chin +14
Warm dense matter remains a challenging regime to characterize experimentally and to model with predictive accuracy. Recent experimental platforms have been developed to generate,…
Resolution-Independent Machine Learning Heat Flux Closure for ICF Plasmas
M. Luo, A. R. Bell, F. Miniati +2
Accurate modeling of heat flux in inertial confinement fusion plasmas requires closures that remain predictive far from local equilibrium and across disparate spatial and temporal…
Statistical theory of electronic degrees of freedom in wave packet molecular dynamics
Daniel Plummer, Pontus Svensson, Wiktor Jasniak +3
We derive statistical distributions for the degrees of freedom in wave packet molecular dynamics models. Specifically, a theory is developed for the width distributions of Gaussian…
Modeling partially-ionized dense plasma using wavepacket molecular dynamics
Daniel Plummer, Pontus Svensson, Wiktor Jasniak +3
We develop a wave packet molecular dynamics framework for modeling the structural properties of partially-ionized dense plasmas, based on a chemical model that explicitly includes…
Time-Embedded Convolutional Neural Networks for Modeling Plasma Heat Transport
Mufei Luo, Charles Heaton, Yizhen Wang +5
We introduce a time-embedded convolutional neural network (TCNN) for modeling spatiotemporal heat transport in plasmas, particularly under strongly nonlocal conditions. In our earl…
A Momentum-Resolved X-ray Thomson Scattering Benchmark of Electronic-Response Models in Warm Dense Aluminium
Dmitrii S. Bespalov, Ulf Zastrau, Zhandos A. Moldabekov +58
The robust diagnosis of conditions generated in warm dense matter (WDM) experiments remains a persistent challenge. Here we describe the measurement of shock-compressed aluminium a…
Learning Heat Transport Kernels Using a Nonlocal Heat Transport Theory-Informed Neural Network
Mufei Luo, Charles Heaton, Yizhen Wang +5
We present a data-driven framework for the modeling of nonlocal heat transport in plasmas using a nonlocal theory informed neural network trained on kinetic Particle-in-Cell simula…
Roadmap for warm dense matter physics
Jan Vorberger, Frank Graziani, David Riley +71
This roadmap presents the state-of-the-art, current challenges and near future developments anticipated in the thriving field of warm dense matter physics. Originating from strongl…
Modelling of warm dense hydrogen via explicit real time electron dynamics: Electron transport properties
Pontus Svensson, Patrick Hollebon, Daniel Plummer +2
We extract electron transport properties from atomistic simulations of a two-component plasma, by mapping the long-wavelength behaviour to a two-fluid model. The mapping procedure…
Ionisation Calculations using Classical Molecular Dynamics
Daniel Plummer, Pontus Svensson, Dirk O. Gericke +3
By performing an ensemble of molecular dynamics simulations, the model-dependent ionisation state is computed for strongly interacting systems self-consistently. This is accomplish…
A molecular dynamics framework coupled with smoothed particle hydrodynamics for quantum plasma simulations
Thomas Campbell, Pontus Svensson, Brett Larder +3
We present a novel scheme for modelling quantum plasmas in the warm dense matter (WDM) regime via a hybrid smoothed particle hydrodynamic - molecular dynamic treatment, here referr…
Modelling of warm dense hydrogen via explicit real time electron dynamics: Dynamic structure factors
Pontus Svensson, Yusuf Aziz, Tobias Dornheim +5
We present two methods for computing the dynamic structure factor for warm dense hydrogen without invoking either the Born-Oppenheimer approximation or the Chihara decomposition, b…
Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser
Yuanfeng Shi, Shenyuan Ren, Hyun-kyung Chung +2
Knowing the characteristic relaxation time of free electrons in a dense plasma is crucial to our understanding of plasma equilibration and transport. However, experimental investig…
Quantifying ionization in hot dense plasmas
Thomas Gawne, Sam M. Vinko, Justin S. Wark
Ionization is a problematic quantity in that it does not have a well-defined thermodynamic definition, yet it is a key parameter within plasma modelling. One still therefore aims t…
Investigating Mechanisms of State Localization in Highly-Ionized Dense Plasmas
Thomas Gawne, Thomas Campbell, Alessandro Forte +14
We present the first experimental observation of K emission from highly charged Mg ions at solid density, driven by intense x-rays from a free electron laser. The presence of K…
Simulations of Collisional Effects in an Inner-Shell Solid-Density Mg X-Ray Laser
Shenyuan Ren, Sam Vinko, Justin S. Wark
Inner-shell K x-ray lasers have been created by pumping gaseous, solid, and liquid targets with the intense x-ray output of free-electron-lasers (FELs). For gaseous targets lasi…
Development of a new quantum trajectory molecular dynamics framework
Pontus Svensson, Thomas Campbell, Frank Graziani +6
An extension to the wave packet description of quantum plasmas is presented, where the wave packet can be elongated in arbitrary directions. A generalised Ewald summation is constr…
Non-thermal evolution of dense plasmas driven by intense x-ray fields
Shenyuan Ren, Yuanfeng Shi, Quincy Y. van den Berg +6
The advent of x-ray free-electron lasers (XFELs) has enabled a range of new experimental investigations into the properties of matter driven to extreme conditions via intense x-ray…
A feasibility study of using X-ray Thomson Scattering to diagnose the in-flight plasma conditions of DT cryogenic implosions
H. Poole, D. Cao, R. Epstein +9
The design of inertial confinement fusion (ICF) ignition targets requires radiation-hydrodynamics simulations with accurate models of the fundamental material properties (i.e., equ…
Volumetric heating of nanowire arrays to keV temperatures using kilojoule-scale petawatt laser interactions
M. P. Hill, O. Humphries, R. Royle +19
We present picosecond-resolution streaked K-shell spectra from 400 nm-diameter nickel nanowire arrays, demonstrating the ability to generate large volumes of high energy density pl…
Time-resolved XUV Opacity Measurements of Warm-Dense Aluminium
S. M. Vinko, V. Vozda, J. Andreasson +20
The free-free opacity in plasmas is fundamental to our understanding of energy transport in stellar interiors and for inertial confinement fusion research. However, theoretical pre…
Retrieving fields from proton radiography without source profiles
M. F. Kasim, A. F. A. Bott, P. Tzeferacos +3
Proton radiography is a technique in high energy density science to diagnose magnetic and/or electric fields in a plasma by firing a proton beam and detecting its modulated intensi…
Ab-initio simulations and measurements of the free-free opacity in Aluminum
P. Hollebon, O. Ciricosta, M. P. Desjarlais +6
The free-free opacity in dense systems is a property that both tests our fundamental understanding of correlated many-body systems, and is needed to understand the radiative proper…
Inverse Problem Instabilities in Large-Scale Plasma Modelling
M. F. Kasim, T. P. Galligan, J. Topp-Mugglestone +2
Our understanding of physical systems generally depends on our ability to match complex computational modelling with measured experimental outcomes. However, simulations with large…