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DOE OSTI · 3014607

Calculating shock Hugoniot and isentropes using multiphase equation of state tables and application to shock and release of diamond ablators in inertial confinement fusion implosions

Millot, Marius [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000344143532)·Celliers, Peter M. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000176001227)·Eggert, Jon H. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000157307108)·Sterne, Philip A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000263983185)
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Abstract

Advances in shock and ramp compression techniques now allow experimental access to unprecedented extreme conditions of pressure and temperature, providing a means to test theoretical models. Here, we describe a simple methodology to compute multi-phase shock Hugoniot and isentropes using multiphase equation of state tables. We treat explicitly the phase coexistence along the phase boundary to reveal the evolution of the sample as it undergoes the phase transformation in adiabatic conditions. We illustrate the method by calculating the predicted shock and shock-and-release behavior of diamond at conditions relevant for the initial stage of inertial confinement fusion implosions.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYDensity functional theoryEquations of fluid dynamicsEquations of stateHugoniot curvePhase transitionsPhysics - Condensed matter physicsPlasma confinementShock compressionShock wavesThermodynamic functionsThermodynamic properties

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Millot, Marius [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000344143532), Celliers, Peter M. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000176001227), Eggert, Jon H. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000157307108), Sterne, Philip A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000263983185). 2026-01-16. Calculating shock Hugoniot and isentropes using multiphase equation of state tables and application to shock and release of diamond ablators in inertial confinement fusion implosions. https://doi.org/10.1063/5.0307379

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