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arXiv 1306.1902cond-mat.mtrl-sciastro-ph.EPphysics.plasm-ph
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密度泛函理论中宽范围流体氢状态方程

Wide range equation of state for fluid hydrogen within density functional theory

Cong Wang, Ping Zhang

摘要:

结合第一性原理分子动力学模拟和无轨道分子动力学模拟,最终建立了液氢的宽范围状态方程。特别地,本文引入的短截止半径赝势使氢的物态方程可以在$9.82\times10^{-4}$~$1.347\times10^{3}$ g/cm $^{3}$和高达$5\times10^{7}$ K的范围内得到。通过与各种实验和理论数据的综合比较,我们得出结论:我们的DFT状态方程可以方便可靠地用于惯性约束聚变的流体动力学模拟。

英文摘要:

Wide range equation of state (EOS) for liquid hydrogen is ultimately built by combining two kinds of density functional theory (DFT) molecular dynamics simulations, namely, first-principles molecular dynamics simulations and orbital-free molecular dynamics simulations. Specially, the present introduction of short cutoff radius pseudopotentials enables the hydrogen EOS to be available in the range $9.82\times10^{-4}$ to $1.347\times10^{3}$ g/cm$^{3}$ and up to $5\times10^{7}$ K. By comprehensively comparing with various attainable experimental and theoretical data, we derive the conclusion that our DFT-EOS can be readily and reliably conducted to hydrodynamic simulations of the inertial confinement fusion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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