skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dynamic conductivity and partial ionization in dense fluid hydrogen

Abstract

A theoretical description for the 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. In this work, we show that at the onset of the metallic transition, optical conduction could be described by a strong rise in the atomic polarizability because of increased ionizations, whereas in the highly degenerate limit, the Ziman weak-scattering model better accounts for the observed saturation of reflectance. The inclusion of the effects of partial ionization in the highly degenerate region provides excellent 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 models that are experimentally benchmarked, as well as an important guide for future studies.

Authors:
 [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Harvard Univ., Cambridge, MA (United States). Lyman Lab. of Physics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Aeronautic and Space Administration (NASA); New York State Energy Research and Development Authority (NYSERDA)
OSTI Identifier:
1460106
Alternate Identifier(s):
OSTI ID: 1433462
Report Number(s):
2017-238, 2376
Journal ID: ISSN 2470-0045; PLEEE8; 2017-238, 2376, 1418
Grant/Contract Number:  
NA0001944; NNX14AP17H
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 97; Journal Issue: 4; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; high-energy-density plasmas; plasma transport; hot dense plasma; strongly-coupled plasmas; warm-dense matter

Citation Formats

Zaghoo, Mohamed. Dynamic conductivity and partial ionization in dense fluid hydrogen. United States: N. p., 2018. Web. doi:10.1103/PhysRevE.97.043205.
Zaghoo, Mohamed. Dynamic conductivity and partial ionization in dense fluid hydrogen. United States. doi:10.1103/PhysRevE.97.043205.
Zaghoo, Mohamed. Tue . "Dynamic conductivity and partial ionization in dense fluid hydrogen". United States. doi:10.1103/PhysRevE.97.043205.
@article{osti_1460106,
title = {Dynamic conductivity and partial ionization in dense fluid hydrogen},
author = {Zaghoo, Mohamed},
abstractNote = {A theoretical description for the 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. In this work, we show that at the onset of the metallic transition, optical conduction could be described by a strong rise in the atomic polarizability because of increased ionizations, whereas in the highly degenerate limit, the Ziman weak-scattering model better accounts for the observed saturation of reflectance. The inclusion of the effects of partial ionization in the highly degenerate region provides excellent 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 models that are experimentally benchmarked, as well as an important guide for future studies.},
doi = {10.1103/PhysRevE.97.043205},
journal = {Physical Review E},
number = 4,
volume = 97,
place = {United States},
year = {Tue Apr 17 00:00:00 EDT 2018},
month = {Tue Apr 17 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on April 17, 2019
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share: