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.

doi:10.1103/PhysRevLett.121.025001

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.

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.

Physical Review Letters 121(2018), 025001
DOI: 10.1103/PhysRevLett.121.025001
Cited 38 times in Scopus

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