Abstract
A theoretical description for optical conduction experiments in dense fluid hydrogen is presented. Different quantum statistical approaches are used to describe the mechanism of electronic transport in hydrogen's high-temperature dense phase. We show that at the onset of the metallic transition, optical conduction could be described by a strong rise in atomic polarizability, due to increased ionization, whereas in the highly degenerate limit, the Ziman weak scattering model better accounts for the observed saturation of reflectance. The inclusion of effects of partial ionization in the highly degenerate region provides great agreement with experimental results. Hydrogen's fluid metallic state is revealed to be a partially ionized free-electron plasma. Our results provide some of the first theoretical transport models that are experimentally benchmarked, as well as an important guide for future studies.
References
Jun 1, 1995·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·H Kitamura, S Ichimaru
Mar 11, 1996·Physical Review Letters·S T WeirW J Nellis
Sep 16, 2000·Physical Review Letters·P M CelliersB A Hammel
Dec 2, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S Kuhlbrodt, R Redmer
Oct 4, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·H ReinholzG Röpke
Jul 23, 2004·The Journal of Chemical Physics·Randolph Q Hood, Giulia Galli
Oct 8, 2004·Nature·Stanimir A BonevGiulia Galli
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J R AdamsV K Gryaznov
Nov 13, 2007·Physical Review Letters·V E FortovM V Zhernokletov
Apr 7, 2010·Physical Review Letters·Fei LinD M Ceperley
Apr 7, 2010·Physical Review Letters·Isaac Tamblyn, Stanimir A Bonev
Feb 26, 2013·Physical Review Letters·Miguel A MoralesDavid M Ceperley
Mar 31, 2015·Physical Review Letters·Guglielmo Mazzola, Sandro Sorella
Jun 27, 2015·Science·M D KnudsonR Redmer
Apr 22, 2016·Proceedings of the National Academy of Sciences of the United States of America·Carlo PierleoniDavid M Ceperley
Jul 9, 2016·Physical Review Letters·R Stewart McWilliamsAlexander F Goncharov
Oct 29, 2017·Proceedings of the National Academy of Sciences of the United States of America·Mohamed Zaghoo, Isaac F Silvera