Physics – Plasma Physics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dpp.j5f15k&link_type=abstract
American Physical Society, Division of Plasma Physics Meeting, November 16-20, 1998 New Orleans, LA, abstract #J5F.15
Physics
Plasma Physics
Scientific paper
Porous material studies are of great interest in ICF physics, e. g. as a way to suppress laser nonuniformities (1), in material physics (2), or in astrophysics where foams have already been used to simulate supernovae remnants (3). The knowledge of foam Equation of State (EOS) is therefore needed. Here we present the first EOS data of CH foams obtained with lasers. The data, in the pressure range of 0.04-4 Mbar, have been obtained by reverse mismatch impedance technique, using aluminium as the reference material and foams with densities ranging from 20 to 400 mg/cc. We performed also measurements on the plastic at normal density (1100 mc/cc). A specific target design makes it possible to measure shock velocities in aluminium and in foams on the same shot. The results are compared to SESAME EOS and QEOS model which include the initial low density effects. [1]M. Dunee et al, Phys. Rev. Lett. 75,3858 (1995). [2] N. Holmes, Proceedings of APS Topical Conference on Shock Compression of Condensed Matter, Colorado Springs USA (1994). [3]B. Remington et al., Phys. Plasmas 4(5),1994.
Batani Dimitri
Benuzzi Alessandra
Faral Bernard
Grandjouan Nicholas
Hall Tom
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