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arXiv physics/0103002physics.plasm-phphysics.comp-ph
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热稠密氢等离子体的热力学:路径积分蒙特卡罗模拟和解析近似

Thermodynamics of hot dense H-plasmas: Path integral Monte Carlo simulations and analytical approximations

V. S. Filinov, M. Bonitz, W. Ebeling, V. E. Fortov

摘要:

本文研究了在$10^{-1}$ ~ $10^2$ Mbar压力范围内高温稠密氢等离子体的热力学。特别是,我们提出了广泛的计算结果的基础上,最近开发的路径积分蒙特卡罗方案(直接PIMC)在这一地区。这种方法允许正确处理热密库仑系统的热力学性质。在非理想参数$Γ\lesssim 3$和简并参数$n_e Λ^3 \lesssim 10$的宽区域内进行计算。我们给出了一个比较与一些可用的结果从其他路径积分计算(限制PIMC)和解析计算的基础上Pade近似强电离等离子体。从三个独立的方法得到的结果之间的良好协议被发现。

英文摘要:

This work is devoted to the thermodynamics of high-temperature dense hydrogen plasmas in the pressure region between $10^{-1}$ and $10^2$ Mbar. In particular we present for this region results of extensive calculations based on a recently developed path integral Monte Carlo scheme (direct PIMC). This method allows for a correct treatment of the thermodynamic properties of hot dense Coulomb systems. Calculations were performed in a broad region of the nonideality parameter $Γ\lesssim 3$ and degeneracy parameter $n_e Λ^3 \lesssim 10$. We give a comparison with a few available results from other path integral calculations (restricted PIMC) and with analytical calculations based on Pade approximations for strongly ionized plasmas. Good agreement between the results obtained from the three independent methods is found.

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