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Title: Linear dependence of surface expansion speed on initial plasma temperature in warm dense matter

Abstract

Recent progress in laser-driven quasi-monoenergetic ion beams enabled the production of uniformly heated warm dense matter. Matter heated rapidly with this technique is under extreme temperatures and pressures, and promptly expands outward. While the expansion speed of an ideal plasma is known to have a square-root dependence on temperature, computer simulations presented here show a linear dependence of expansion speed on initial plasma temperature in the warm dense matter regime. The expansion of uniformly heated 1–100 eV solid density gold foils was modeled with the RAGE radiation-hydrodynamics code, and the average surface expansion speed was found to increase linearly with temperature. The origin of this linear dependence is explained by comparing predictions from the SESAME equation-of-state tables with those from the ideal gas equation-of-state. In conclusion, these simulations offer useful insight into the expansion of warm dense matter and motivate the application of optical shadowgraphy for temperature measurement.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1321777
Report Number(s):
LA-UR-16-21124
Journal ID: ISSN 2045-2322
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Bang, Woosuk, Albright, Brian James, Bradley, Paul Andrew, Vold, Erik Lehman, Boettger, Jonathan Carl, and Fernández, Juan Carlos. Linear dependence of surface expansion speed on initial plasma temperature in warm dense matter. United States: N. p., 2016. Web. doi:10.1038/srep29441.
Bang, Woosuk, Albright, Brian James, Bradley, Paul Andrew, Vold, Erik Lehman, Boettger, Jonathan Carl, & Fernández, Juan Carlos. Linear dependence of surface expansion speed on initial plasma temperature in warm dense matter. United States. doi:10.1038/srep29441.
Bang, Woosuk, Albright, Brian James, Bradley, Paul Andrew, Vold, Erik Lehman, Boettger, Jonathan Carl, and Fernández, Juan Carlos. Tue . "Linear dependence of surface expansion speed on initial plasma temperature in warm dense matter". United States. doi:10.1038/srep29441. https://www.osti.gov/servlets/purl/1321777.
@article{osti_1321777,
title = {Linear dependence of surface expansion speed on initial plasma temperature in warm dense matter},
author = {Bang, Woosuk and Albright, Brian James and Bradley, Paul Andrew and Vold, Erik Lehman and Boettger, Jonathan Carl and Fernández, Juan Carlos},
abstractNote = {Recent progress in laser-driven quasi-monoenergetic ion beams enabled the production of uniformly heated warm dense matter. Matter heated rapidly with this technique is under extreme temperatures and pressures, and promptly expands outward. While the expansion speed of an ideal plasma is known to have a square-root dependence on temperature, computer simulations presented here show a linear dependence of expansion speed on initial plasma temperature in the warm dense matter regime. The expansion of uniformly heated 1–100 eV solid density gold foils was modeled with the RAGE radiation-hydrodynamics code, and the average surface expansion speed was found to increase linearly with temperature. The origin of this linear dependence is explained by comparing predictions from the SESAME equation-of-state tables with those from the ideal gas equation-of-state. In conclusion, these simulations offer useful insight into the expansion of warm dense matter and motivate the application of optical shadowgraphy for temperature measurement.},
doi = {10.1038/srep29441},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Tue Jul 12 00:00:00 EDT 2016},
month = {Tue Jul 12 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 3works
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