Impact of first-principles properties of deuterium–tritium on inertial confinement fusion target designs
Abstract
A comprehensive knowledge of the properties of high-energy-density plasmas is crucial to understanding and designing low-adiabat, inertial confinement fusion (ICF) implosions through hydrodynamic simulations. Warm-dense-matter (WDM) conditions are routinely accessed by low-adiabat ICF implosions, in which strong coupling and electron degeneracy often play an important role in determining the properties of warm dense plasmas. The WDM properties of deuterium–tritium (DT) mixtures and ablator materials, such as the equation of state (EOS), thermal conductivity, opacity, and stopping power, were usually estimated by models in hydrocodes used for ICF simulations. In these models, many-body and quantum effects were only approximately taken into account in the WMD regime. Moreover, the self-consistency among these models was often missing. To examine the accuracy of these models, we have systematically calculated the static, transport, and optical properties of warm dense DT plasmas, using first-principles (FP) methods over a wide range of densities and temperatures that cover the ICF “path” to ignition. These FP methods include the pathintegral Monte Carlo (PIMC) and quantum-molecular dynamics (QMD) simulations, which treat electrons with many-body quantum theory. The first-principles equation-of-state (FPEOS) table, thermal conductivities (KQMD), and first principles opacity table (FPOT) of DT have been self-consistently derived from the combined PIMCmore »
- Authors:
-
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Div.
- Univ. of California, Berkeley, CA (United States). Department of Earth and Planetary Science and Department of Astronomy
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1178573
- Alternate Identifier(s):
- OSTI ID: 1240397
- Report Number(s):
- LA-UR-14-28895
Journal ID: ISSN 1070-664X; PHPAEN; 2014-116; 1220
- Grant/Contract Number:
- NA0001944; NA000194; AC52-06NA25396
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 5; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; inertial confinement; plasma temperature; opacity; thermal conductivity; plasma density
Citation Formats
Hu, S. X., Goncharov, V. N., Boehly, T. R., McCrory, R. L., Skupsky, S., Collins, L. A., Kress, J. D., and Militizer, B. Impact of first-principles properties of deuterium–tritium on inertial confinement fusion target designs. United States: N. p., 2015.
Web. doi:10.1063/1.4917477.
Hu, S. X., Goncharov, V. N., Boehly, T. R., McCrory, R. L., Skupsky, S., Collins, L. A., Kress, J. D., & Militizer, B. Impact of first-principles properties of deuterium–tritium on inertial confinement fusion target designs. United States. https://doi.org/10.1063/1.4917477
Hu, S. X., Goncharov, V. N., Boehly, T. R., McCrory, R. L., Skupsky, S., Collins, L. A., Kress, J. D., and Militizer, B. 2015.
"Impact of first-principles properties of deuterium–tritium on inertial confinement fusion target designs". United States. https://doi.org/10.1063/1.4917477. https://www.osti.gov/servlets/purl/1178573.
@article{osti_1178573,
title = {Impact of first-principles properties of deuterium–tritium on inertial confinement fusion target designs},
author = {Hu, S. X. and Goncharov, V. N. and Boehly, T. R. and McCrory, R. L. and Skupsky, S. and Collins, L. A. and Kress, J. D. and Militizer, B.},
abstractNote = {A comprehensive knowledge of the properties of high-energy-density plasmas is crucial to understanding and designing low-adiabat, inertial confinement fusion (ICF) implosions through hydrodynamic simulations. Warm-dense-matter (WDM) conditions are routinely accessed by low-adiabat ICF implosions, in which strong coupling and electron degeneracy often play an important role in determining the properties of warm dense plasmas. The WDM properties of deuterium–tritium (DT) mixtures and ablator materials, such as the equation of state (EOS), thermal conductivity, opacity, and stopping power, were usually estimated by models in hydrocodes used for ICF simulations. In these models, many-body and quantum effects were only approximately taken into account in the WMD regime. Moreover, the self-consistency among these models was often missing. To examine the accuracy of these models, we have systematically calculated the static, transport, and optical properties of warm dense DT plasmas, using first-principles (FP) methods over a wide range of densities and temperatures that cover the ICF “path” to ignition. These FP methods include the pathintegral Monte Carlo (PIMC) and quantum-molecular dynamics (QMD) simulations, which treat electrons with many-body quantum theory. The first-principles equation-of-state (FPEOS) table, thermal conductivities (KQMD), and first principles opacity table (FPOT) of DT have been self-consistently derived from the combined PIMC and QMD calculations. They have been compared with the typical models, and their effects to ICF simulations have been separately examined in previous publications. In this paper, we focus on their combined effects to ICF implosions through hydro-simulations using these FP-based properties of DT in comparison with the usual model simulations. We found that the predictions of ICF neutron yield could change by up to a factor of ~2.5; the lower the adiabat of DT capsules, the more variations in hydro-simulations. The FP-based properties of DT are essential for designing ICF ignition targets. We also discuss future work on first-principles studies of ICF ablator materials.},
doi = {10.1063/1.4917477},
url = {https://www.osti.gov/biblio/1178573},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 22,
place = {United States},
year = {Mon Apr 20 00:00:00 EDT 2015},
month = {Mon Apr 20 00:00:00 EDT 2015}
}
Web of Science
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