计算物理 ›› 2018, Vol. 35 ›› Issue (2): 138-150.DOI: 10.19596/j.cnki.1001-246x.7596

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含温有界原子理论体系下电子状态方程不确定度的量化计算

孟续军, 王瑞利   

  1. 北京应用物理与计算数学研究所, 北京 100094
  • 收稿日期:2016-12-01 修回日期:2017-03-05 出版日期:2018-03-25 发布日期:2018-03-25
  • 作者简介:孟续军(1965-),男,博士,研究员,从事原子物理过程及物性研究,E-mail:meng_xujun@sina.com
  • 基金资助:
    国家自然科学基金(11372051,11574034,91630312)资助项目

Uncertainty Quantification of Electron EOS in Temperature-and-Density Dependent Atomic System

MENG Xujun, WANG Ruili   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • Received:2016-12-01 Revised:2017-03-05 Online:2018-03-25 Published:2018-03-25

摘要: 通过含温有界原子模型,给出基于35种交换关联势形式,计算等离子体电子状态方程不确定度的方法.设计一种快速粗估不确定度的方法,并在TF模型中进行检验.以金为例,计算温度从1.0 eV~10 000.0 eV、密度为1.0、10.0、100.0 g·cm-3的电子总能量、压强、离化度的不确定度和拟真值.计算结果可为工程设计提供参考.

关键词: 电子状态方程, 不确定度, 原子结构

Abstract: By using temperature-and-density dependent atomic models, a method for uncertainty of electron EOS of plasmas is described via 35 functional exchange-correlation potentials. A fast method for roughly evaluating uncertainty is designed, and checked in Thomas-Fermi model. Taking gold as an example, calculations of uncertainties of total inner energy, electron pressure and ionization degree, with their ‘quasi true value’, are carried out in the range of temperatures from 1.0 to 10 000.0 eV with three densities 1.0, 10.0, 100.0 g·cm-3,respectively. The results can be applied in engineering design.

Key words: uncertainty quantification, electron EOS, atomic structure

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