MPQeos - An Equation of State Code for Hot Dense Matter
MPQeos is a computer program that generates tabulated
equations of state for hot dense matter, based on the published
equation of state (EOS) model QEOS [1]. It has been developed at MPQ
Garching, and is publicly available (
get it here
).
The QEOS model describes the equation of state of any material in a wide
range of densities and temperatures by means of the Thomas-Fermi
equation of state for the electrons, plus a semi-empirical part
for the ions. Our aim is to make the code available to all those using
EOS in the context of the interpretation of shock wave experiments,
or simulations of hot dense plasma. In Germany, these are mainly the
Laser-Plasma group at MPQ Garching and the Heavy Ion Plasma group at
GSI (Gesellschaft für Schwerionenforschung
), Darmstadt.
Figure: Principal Hugoniot curve
of Gold, here the shock pressure vs. particle velocity, as measured experimentally
at the Asterix laser at MPQ, Garching [2] (indicated by symbols),
and results of the SESAME tabulated equation of state, compared with
MPQeos results (indicated by lines). [The principal Hugoniot curve connects
states of the material behind shock waves of increasing strength.]
References:
[1] A. Kemp and J. Meyer-ter-Vehn, An equation of state code for hot
dense matter, based on the QEOS description, Nucl. Instrum. Methods A
415, 674-76 (1998)
[2] A. Benuzzi et al, Equation of state data for gold in the pressure range
<10Tpa, Phys Rev B61, 9287 (2000)
latest change: 06/08/02, by A.Kemp
-->go
back to the MPQ Theory home page
|