Link between K absorption edges and thermodynamic properties of warm dense plasmas established by an improved first-principles method

A precise calculation that translates shifts of x-ray K absorption edges to variations of thermodynamic properties allows quantitative characterization of interior thermodynamic properties of warm dense plasmas by x-ray absorption techniques, which provides essential information for inertial confine...

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Published in:Physical review. B 2016-03, Vol.93 (11), Article 115114
Main Authors: Zhang, Shen, Zhao, Shijun, Kang, Wei, Zhang, Ping, He, Xian-Tu
Format: Article
Language:English
Subjects:
Absorption
Condensed matter
Dense plasmas
Inertial confinement fusion
Inhomogeneity
Mathematical models
Thermodynamic properties
X-rays
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creator Zhang, Shen
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Kang, Wei
Zhang, Ping
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description A precise calculation that translates shifts of x-ray K absorption edges to variations of thermodynamic properties allows quantitative characterization of interior thermodynamic properties of warm dense plasmas by x-ray absorption techniques, which provides essential information for inertial confinement fusion and other astrophysical applications. We show that this interpretation can be achieved through an improved first-principles method. Our calculation shows that the shift of K edges exhibits selective sensitivity to thermal parameters and thus would be a suitable temperature index to warm dense plasmas. We also show with a simple model that the shift of K edges can be used to detect inhomogeneity inside warm dense plasmas when combined with other experimental tools.
doi_str_mv 10.1103/PhysRevB.93.115114
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Absorption
Condensed matter
Dense plasmas
Inertial confinement fusion
Inhomogeneity
Mathematical models
Thermodynamic properties
X-rays
title Link between K absorption edges and thermodynamic properties of warm dense plasmas established by an improved first-principles method
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