2020年11月1日
An evaluation of the self-diffusion coefficient of liquid hydrogen via the generic van der Waals equation of state and modified free volume theory
Chemical Physics
- ,
- ,
- 巻
- 539
- 号
- 開始ページ
- 110952
- 終了ページ
- 110952
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.chemphys.2020.110952
- 出版者・発行元
- Elsevier BV
The modified free volume (MFV) theory was applied to evaluation of the self-diffusion coefficient of liquid hydrogen in which the nuclear quantum effect appears. The free volume of the hydrogen was defined via the generic van der Waals (GvdW) equation of state, which was derived based on the centroid path integral notation. The computational results of the self-diffusion coefficient were compared to those of the experimental data, centroid molecular dynamics (CMD) methods, and previous studies. This comparison revealed that the self-diffusion coefficient of liquid hydrogen computed by means of the MFV theory reproduces the experimental data with the same precision as CMD and previous studies. In conclusion, even though the MFV theory is a completely classical mechanism, the self-diffusion coefficient of a quantum liquid can be calculated on the basis of the MFV theory by treating the centroid as a representative of the quantum molecule.
- リンク情報
- ID情報
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- DOI : 10.1016/j.chemphys.2020.110952
- ISSN : 0301-0104
- SCOPUS ID : 85090041632