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Equation of State in Laser Shock Simulations

Published online by Cambridge University Press:  09 March 2009

B.K. Godwal ,
S.K. Sikka  and
T.C. Kaushik
B.K. Godwal
Affiliation:
High Pressure Physics Division, Bhabha Atomic Research Centre, Bombay 400 085, India
S.K. Sikka
Affiliation:
High Pressure Physics Division, Bhabha Atomic Research Centre, Bombay 400 085, India
T.C. Kaushik
Affiliation:
Neutron Physics Division, Bhabha Atomic Research Centre, Bombay 400 005, India
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Abstract

A three-term equation of state is used for the simulation of hydrodynamic shock phenomena. The reliability of it is tested by comparing the isotherms and shock Hugoniots obtained from it with available experimental data. This is illustrated for three typical materials Al, Pt and Au, which are of considerable interest for inertially confined thermonuclear fusion studies. We observe that reliable equation of state (EOS) data can be generated for nonmetallic substances like CH2. The EOS is used in the simulations of laser-driven shocks in double-layered target aluminum on gold (Al-Au) using hydrodynamic code employing a simplified laser-absorption model. The output from it is compared with the recent laser-driven shock experiments of Koeniget al.

Type
Research Article
Information
Laser and Particle Beams , Volume 15 , Issue 3 , September 1997 , pp. 353 - 365
Copyright
Copyright © Cambridge University Press 1997

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