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Title: Hugoniot and mean ionization of laser-shocked Ge-doped plastic

Pressure, density, temperature, and reflectivity measurements along the principal Hugoniot of Ge-doped plastics used in Inertial Confinement Fusion capsules surrogates were obtained to pressures reaching up to 7 Mbar and compared to Quotidian Equation of State models. The experiment was performed using the GEKKO XII laser at the Institute of Laser Engineering at Osaka University in Japan. High precision measurements of pressure and density were obtained using a quartz standard and found to be in good agreement with theoretical Hugoniot curves. Modeling of reflectivity measurements show that shocked samples can be described as poor metals and that mean ionization calculated within the frame of QEOS is overestimated. Similarly, shock temperatures were found to be below theoretical Hugoniot curves.
Authors:
; ;  [1] ; ;  [2] ;  [3] ; ;  [4] ; ; ; ; ; ; ; ;  [2]
  1. CEA, DAM, DIF, Bruyères-le-Châtel, F-91297 Arpajon (France)
  2. Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871 (Japan)
  3. (Japan)
  4. Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871 (Japan)
Publication Date:
OSTI Identifier:
22218350
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPARATIVE EVALUATIONS; DOPED MATERIALS; ELECTRON TEMPERATURE; EQUATIONS OF STATE; GERMANIUM; INERTIAL CONFINEMENT; ION TEMPERATURE; IONIZATION; LASERS; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA PRESSURE; PLASMA SIMULATION; PLASTICS; QUARTZ; RANKINE-HUGONIOT EQUATIONS; REFLECTIVITY; THERMODYNAMICS