中国物理B ›› 2005, Vol. 14 ›› Issue (10): 2077-2082.doi: 10.1088/1009-1963/14/10/025

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Pressure dissociation of dense hydrogen

蔡灵仓1, 经福谦1, 陈其峰2, 陈栋泉3   

  1. (1)Laboratory for Shock Wave and Detonation Physics Research,Institute of Fluid Physics, Mianyan 621900, China; (2)Laboratory for Shock Wave and Detonation Physics Research,Institute of Fluid Physics, Mianyan 621900, China;Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; (3)Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2005-03-04 修回日期:2005-06-29 出版日期:2005-10-20 发布日期:2005-10-20
  • 基金资助:
    Project supported by the Foundation of Laboratory for Shock Wave and Detonation Physics Research (Grant No 51478030203ZW0902) and by the National Natural Science Foundation of China (Grant No 100032040).

Pressure dissociation of dense hydrogen

Chen Qi-Feng (陈其峰)ab, Cai Ling-Cang (蔡灵仓)a, Chen Dong-Quan (陈栋泉)b, Jing Fu-Qian (经福谦)a   

  1. a Laboratory for Shock Wave and Detonation Physics Research,Institute of Fluid Physics, Mianyan 621900, China; b Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2005-03-04 Revised:2005-06-29 Online:2005-10-20 Published:2005-10-20
  • Supported by:
    Project supported by the Foundation of Laboratory for Shock Wave and Detonation Physics Research (Grant No 51478030203ZW0902) and by the National Natural Science Foundation of China (Grant No 100032040).

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摘要： The self-consistent fluid variational model (SFVM) has been used to describe the pressure dissociation of dense hydrogen at high temperatures. This paper focuses on a mixture of hydrogen atoms and molecules and is devoted to the study of the phenomenon of pressure dissociation at finite temperatures. The equation of state and dissociation degree have been calculated from the free energy functions in the range of temperature 2000--10,000K and density 0.02--1.0g/cm2, which can be compared with other approaches and experiments. The pressure dissociation is found to occur in higher density range, while temperature dissociation is a more gradual effect.

关键词: equation of state, pressure dissociation, self-consistent fluid variational model, dense hydrogen

Abstract: The self-consistent fluid variational model (SFVM) has been used to describe the pressure dissociation of dense hydrogen at high temperatures. This paper focuses on a mixture of hydrogen atoms and molecules and is devoted to the study of the phenomenon of pressure dissociation at finite temperatures. The equation of state and dissociation degree have been calculated from the free energy functions in the range of temperature 2000--10,000K and density 0.02--1.0g/cm3, which can be compared with other approaches and experiments. The pressure dissociation is found to occur in higher density range, while temperature dissociation is a more gradual effect.

Key words: equation of state, pressure dissociation, self-consistent fluid variational model, dense hydrogen

中图分类号:  (Decomposition reactions (pyrolysis, dissociation, and fragmentation))

  • 82.30.Lp
82.20.-w (Chemical kinetics and dynamics) 95.30.Ft (Molecular and chemical processes and interactions)