TITLE

Optical properties of water at high temperature

AUTHOR(S)
French, Martin; Redmer, Ronald
PUB. DATE
April 2011
SOURCE
Physics of Plasmas;Apr2011, Vol. 18 Issue 4, p043301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We calculate optical properties of water along the principal Hugoniot curve from ambient conditions up to temperatures of 130 000 K with density functional theory (DFT) and the Kubo-Greenwood formula. The effect of the exchange correlation functional is examined by comparing the generalized gradient approximation with a hybrid functional that contains Fock exchange. We find noticeable but moderate differences between the respective results which decrease rapidly above 80 000 K. The reflectivity along the principal Hugoniot is calculated and a good qualitative but fair quantitative agreement with available experimental data is found. Our results are of general relevance for calculations of optical properties with DFT at zero and elevated temperature.
ACCESSION #
60313491

 

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