First-principles equation-of-state table of deuterium for inertial confinement fusion applications

By S. X. Hu, B. Militzer, V. Goncharov, S. Skupsky. 2011

177 citations recorded by the source corpus.

Understanding and designing inertial confinement fusion (ICF) implosions through radiation-hydrodynamics simulations relies on the accurate knowledge of the equation of state (EOS) of the deuterium and tritium fuels. To minimize the drive energy for ignition, the imploding shell of DT fuel must be kept as cold as possible. Such low-adiabat ICF implosions can access to coupled and degenerate plasma conditions, in which the analytical EOS models become inaccurate due to many-body effects. Using the path-integral Monte Carlo (PIMC) simulations we have derived a first-principles EOS (FPEOS) table of deuterium that covers typical ICF fuel conditions at densities ranging from 0.002 to 1596 g/cm{sup 3} and temperatures of 1.35 eV to 5.5 keV. We report the internal energy and the pressure and discuss the structure of the plasma in terms of pair-correlation functions. When compared with the widely used SESAME table and the revised Kerley03 table, discrepancies in the internal energy and in the pressure are identified for moderately coupled and degenerate plasma conditions. In contrast to the SESAME table, the revised Kerley03 table is in better agreement with our FPEOS results over a wide range of densities and temperatures. Although subtle differences still exist for lower temperatures (T < 10more » eV) and moderate densities (1 to 10 g/cm{sup 3}), hydrodynamics simulations of cryogenic ICF implosions using the FPEOS table and the Kerley03 table have resulted in similar results for the peak density, areal density ({rho}R), and neutron yield, which differ significantly from the SESAME simulations.« less

Subfields: Atomic and Molecular Physics, and Optics, Geophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/baf4340b3e08dc670f72ddcbf63c7222818a7f24

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

In Geophysics

In Nuclear and High Energy Physics

Citations in the corpus

A New Equation of State for Dense Hydrogen–Helium Mixtures (2019, methodology): “Figure 8 portrays now similar comparisons with another set of first principle simulations, namely the Coupled-Electron-Ion Monte-Carlo (CEIMC) calculations of Morales et al. (2010a), probing the very pressuredissociation/ionization regime, between ρ = 0.7 g cm−3 and 2.4 g cm−3.”
Ab initio simulation of warm dense matter (2019, unknown): “[208, 209].”
AB INITIO EQUATIONS OF STATE FOR HYDROGEN (H-REOS.3) AND HELIUM (He-REOS.3) AND THEIR IMPLICATIONS FOR THE INTERIOR OF BROWN DWARFS (2014, methodology): “Although a couple of EOS data sets exist for hydrogen that are derived from first principles simulations (Caillabet et al. 2011; Hu et al. 2011; Wang & Zhang 2013; Morales et al. 2012), these are mostly dedicated to applications in inertial confinement fusion (ICF).”
The Properties of Hydrogen and Helium Under Extreme Conditions (2011, methodology): “Hu et al., 2011 employed RPIMC to map the EOS in the range 0.002g/cm3 ≤ ρ ≤ 1596g/cm3, 104K ≤ T ≤ 108K.”