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Title: First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions

Abstract

Obtaining an accurate equation of state (EOS) of polystyrene (CH) is crucial to reliably design inertial confinement fusion (ICF) capsules using CH/CH-based ablators. Thus, with first-principles calculations, we have investigated the extended EOS of CH over a wide range of plasma conditions (ρ = 0.1 to 100 g/cm 3 and T = 1,000 to 4,000,000 K). When compared with the widely used SESAME-EOS table, the first-principles equation of state (FPEOS) of CH has shown significant differences in the low-temperature regime, in which strong coupling and electron degeneracy play an essential role in determining plasma properties. Hydrodynamic simulations of cryogenic target implosions on OMEGA using the FPEOS table of CH have predicted ~5% reduction in implosion velocity and ~30% decrease in neutron yield in comparison with the usual SESAME simulations. This is attributed to the ~10% lower mass ablation rate of CH predicted by FPEOS. Simulations using CH-FPEOS show better agreement with measurements of Hugoniot temperature and scattered lights from ICF implosions.

Authors:
 [1];  [2];  [1];  [2];  [1];  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Rochester, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); Univ. of Rochester (United States); New York State Energy Research and Development Authority (United States)
OSTI Identifier:
1223806
Alternate Identifier(s):
OSTI ID: 1223575; OSTI ID: 1329876
Report Number(s):
LA-UR-15-24894
Journal ID: ISSN 1539-3755; PLEEE8; 2015-104; 2205; TIC-1241
Grant/Contract Number:  
NA0001944; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 4; Journal ID: ISSN 1539-3755
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Hu, S. X., Collins, L. A., Goncharov, V. N., Kress, J. D., McCrory, R. L., and Skupsky, S. First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions. United States: N. p., 2015. Web. doi:10.1103/PhysRevE.92.043104.
Hu, S. X., Collins, L. A., Goncharov, V. N., Kress, J. D., McCrory, R. L., & Skupsky, S. First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions. United States. doi:10.1103/PhysRevE.92.043104.
Hu, S. X., Collins, L. A., Goncharov, V. N., Kress, J. D., McCrory, R. L., and Skupsky, S. Wed . "First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions". United States. doi:10.1103/PhysRevE.92.043104. https://www.osti.gov/servlets/purl/1223806.
@article{osti_1223806,
title = {First-principles equation of state of polystyrene and its effect on inertial confinement fusion implosions},
author = {Hu, S. X. and Collins, L. A. and Goncharov, V. N. and Kress, J. D. and McCrory, R. L. and Skupsky, S.},
abstractNote = {Obtaining an accurate equation of state (EOS) of polystyrene (CH) is crucial to reliably design inertial confinement fusion (ICF) capsules using CH/CH-based ablators. Thus, with first-principles calculations, we have investigated the extended EOS of CH over a wide range of plasma conditions (ρ = 0.1 to 100 g/cm3 and T = 1,000 to 4,000,000 K). When compared with the widely used SESAME-EOS table, the first-principles equation of state (FPEOS) of CH has shown significant differences in the low-temperature regime, in which strong coupling and electron degeneracy play an essential role in determining plasma properties. Hydrodynamic simulations of cryogenic target implosions on OMEGA using the FPEOS table of CH have predicted ~5% reduction in implosion velocity and ~30% decrease in neutron yield in comparison with the usual SESAME simulations. This is attributed to the ~10% lower mass ablation rate of CH predicted by FPEOS. Simulations using CH-FPEOS show better agreement with measurements of Hugoniot temperature and scattered lights from ICF implosions.},
doi = {10.1103/PhysRevE.92.043104},
journal = {Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics},
number = 4,
volume = 92,
place = {United States},
year = {2015},
month = {10}
}

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Cited by: 23 works
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    High Pressure Hydrocarbons Revisited: From van der Waals Compounds to Diamond
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