Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session UO7: Equation of State
2:00 PM–4:48 PM,
Thursday, November 8, 2018
OCC
Room: B117-119
Chair: Peter Celliers, Lawrence Livermore National Lab
Abstract ID: BAPS.2018.DPP.UO7.3
Abstract: UO7.00003 : High-Precision Hugoniot measurements for CH foams in the 2-9 Mbar range *
2:24 PM–2:36 PM
Presenter:
Y. Aglitskiy
(Plasma Physics Division, NRL)
Authors:
Y. Aglitskiy
(Plasma Physics Division, NRL)
A. L Velikovich
(Plasma Physics Division, NRL)
M. Karasik
(Plasma Physics Division, NRL)
A. J Schmitt
(Plasma Physics Division, NRL)
V. Serlin
(Plasma Physics Division, NRL)
J. L Weaver
(Plasma Physics Division, NRL)
J. Oh
(Plasma Physics Division, NRL)
S. P. Obenschain
(Plasma Physics Division, NRL)
K. Cochrane
(Sandia National Laboratories)
Absolute Hugoniot measurements for plastic foams at ~10% of solid CH density and supporting simulation results are reported. Planar foam slabs, ~400 μm thick and ~500 μm wide, some of which were covered with a 10 μm solid plastic ablator, were directly driven with 4 ns long Nike KrF 248 nm wavelength laser pulses that produced strong shock waves in the foam. The shock and mass velocities in our experiments were up to 104 km/s and 84 km/s, respectively, and the shock pressures up to ~9 Mbar. The motion of the shock and ablation fronts was recorded using side-on monochromatic x-ray imaging radiography. The steadiness of the observed shock and ablation fronts within ~1% has been verified. The Hugoniot data inferred from our velocity measurements agree with the predictions of the EOS models, such as SESAME, near the highest pressure ~9 Mbar, but from 2 to 5 Mbar, a lower shock density compression is observed than that predicted by the models. Possible causes for this discrepancy are discussed.
*Work supported by the U.S. DOE/NNSA. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE's NNSA under contract DE-NA-0003525.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.UO7.3
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700