Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

1 Publikation

Absolute Equation-of-State Measurement for Polystyrene from 25 - 60 Mbar Using a Spherically Converging Shock Wave

Döppner, T.; Swift, D. C.; Kritcher, A. L.; Bachmann, B.; Collins, G. W.; Chapman, D. A.; Hawreliak, J.; Kraus, D.; Nilsen, J.; Rothman, S.; Benedict, L. X.; Dewald, E.; Fratanduono, D. E.; Gaffney, J. A.; Glenzer, S. H.; Hamel, S.; Landen, O. L.; Lee, H. J.; Lepape, S.; Ma, T.; Macdonald, M. J.; Macphee, A.; Milathianaki, D.; Millot, M.; Neumayer, P.; Sterne, P. A.; Tommasini, R.; Falcone, R. W.

Abstract

We have developed an experimental platform for the National Ignition Facility (NIF) that uses spherically converging shock waves for absolute equation of state (EOS) measurements along the principal Hugoniot. In this Letter we present radiographic compression measurements for polystyrene that were taken at shock pressures reaching 60 Mbar (6 TPa). This significantly exceeds previously published results obtained on the Nova laser [Cauble et al., Phys. Rev. Lett. 80, 1248 (1998)] at strongly improved precision, allowing to discriminate between different EOS models. We find excellent agreement with Kohn-Sham Density Functional Theory based molecular dynamics simulations.

Downloads

Permalink: https://www.hzdr.de/publications/Publ-27429

Jahre: 2023 2022 2021 2020 2019 2018 2017 2016 2015