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

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

doi:10.1103/PhysRevLett.121.025001

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

Phys Rev Lett. 2018 Jul 13;121(2):025001. doi: 10.1103/PhysRevLett.121.025001.

Authors

T Döppner¹, D C Swift¹, A L Kritcher¹, B Bachmann¹, G W Collins^{1

2}, D A Chapman³, J Hawreliak¹, D Kraus^{4

5}, J Nilsen¹, S Rothman³, L X Benedict¹, E Dewald¹, D E Fratanduono¹, J A Gaffney¹, S H Glenzer⁶, S Hamel¹, O L Landen¹, H J Lee⁶, S LePape¹, T Ma¹, M J MacDonald⁴, A G MacPhee¹, D Milathianaki⁶, M Millot¹, P Neumayer⁷, P A Sterne¹, R Tommasini¹, R W Falcone⁴

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² Department of Mechanical Engineering, Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA.
³ AWE plc, Aldermaston RG7 4PR, United Kingdom.
⁴ University of California, Berkeley, California 94720, USA.
⁵ Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
⁶ SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
⁷ GSI Helmholtz-Zentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

PMID: 30085737
DOI: 10.1103/PhysRevLett.121.025001

Abstract

We have developed an experimental platform for the National Ignition Facility that uses spherically converging shock waves for absolute equation-of-state (EOS) measurements along the principal Hugoniot. In this Letter, we present one indirect-drive implosion experiment with a polystyrene sample that employs radiographic compression measurements over a range of shock pressures reaching up to 60 Mbar (6 TPa). This significantly exceeds previously published results obtained on the Nova laser [R. Cauble et al., Phys. Rev. Lett. 80, 1248 (1998)PRLTAO0031-900710.1103/PhysRevLett.80.1248] at a strongly improved precision, allowing us to discriminate between different EOS models. We find excellent agreement with Kohn-Sham density-functional-theory-based molecular dynamics simulations.