Accurate Temperature Diagnostics for Matter under Extreme Conditions

Abstract

The experimental investigation of matter under extreme densities and temperatures as they occur for example in astrophysical objects and nuclear fusion applications constitutes one of the most active frontiers at the interface of material science, plasma physics, and engineering. The central obstacle is given by the rigorous interpretation of the experimental results, as even the diagnosis of basic parameters like the temperature T is rendered highly difficult by the extreme conditions. In this work, we present a simple, approximation-free method to extract the temperature of arbitrarily complex materials from scattering experiments, without the need for any simulations or an explicit deconvolution. This new paradigm can be readily implemented at modern facilities and corresponding experiments will have a profound impact on our understanding of warm dense matter and beyond, and open up a gamut of appealing possibilities in the context of thermonuclear fusion, laboratory astrophysics, and related disciplines.

References in corpus (6)

• Observation of the Wigner-Huntington Transition to Solid Metallic Hydrogen
• Ab initio equations of state for hydrogen (H-REOS.3) and helium (He-REOS.3) and their implications for the interior of Brown Dwarfs
• The Formation of Jupiter's Diluted Core by a Giant Impact
• Carbon ionization at Gbar pressures: an ab initio perspective on astrophysical high-density plasmas
• Nonlinear density response from imaginary-time correlation functions: Ab initio path integral Monte Carlo simulations of the warm dense electron gas
• Pair potentials for warm dense matter and their application to x-ray Thomson scattering in aluminum and beryllium

Cited by in corpus (29)

• Electronic Density Response of Warm Dense Matter
• First principles simulations of dense hydrogen
• Ab initio Static Exchange-Correlation Kernel across Jacob's Ladder without functional derivatives
• X-ray Thomson scattering spectra from DFT-MD simulations based on a modified Chihara formula
• Linear-response time-dependent density functional theory approach to warm dense matter with adiabatic exchange--correlation kernels
• Non-empirical mixing coefficient for hybrid XC functionals from analysis of the XC kernel
• Prediction of a roton-type feature in warm dense hydrogen
• Ab initio path integral Monte Carlo simulations of hydrogen snapshots at warm dense matter conditions
• Extraction of the frequency moments of spectral densities from imaginary-time correlation function data
• Assessing the accuracy of hybrid exchange-correlation functionals for the density response of warm dense electrons
• Revealing Non-equilibrium and Relaxation in Warm Dense Matter
• From Density Response to Energy Functionals and Back: An ab initio perspective on Matter Under Extreme Conditions
• Model-free Rayleigh weight from x-ray Thomson scattering measurements
• Unravelling the nonlinear ideal density response of many-body systems
• Averaging over atom snapshots in linear-response TDDFT of disordered systems: A case study of warm dense hydrogen
• Fourier-Matsubara series expansion for imaginary-time correlation functions
• Applying the Liouville-Lanczos Method of Time-Dependent Density-Functional Theory to Warm Dense Matter
• Modelling of warm dense hydrogen via explicit real time electron dynamics: Dynamic structure factors
• Virial coefficients of the Uniform Electron Gas from Path Integral Monte Carlo Simulations
• Energy response and spatial alignment of the perturbed electron gas
• Excitation signatures of isochorically heated electrons in solids at finite wavenumber explored from first principles
• Ultrafast Heating Induced Suppression of $d$-band Dominance in the Electronic Excitation Spectrum of Cuprum
• On the density-density correlations of the non-interacting finite temperature electron gas
• Heating in Multi-Layer Targets at ultra-high Intensity Laser Irradiation and the Impact of Density Oscillation
• A composite ansatz for the calculation of dynamical structure factor
• Ab initio density functional theory approach to warm dense hydrogen: from density response to electronic correlations
• Dynamic properties of the warm dense uniform electron gas with the qSTLS dielectric scheme
• Physics-enhanced neural networks for equation-of-state calculations
• PyLIT: Reformulation and implementation of the analytic continuation problem using kernel representation methods