Highly radiative shock experiments driven by GEKKO XII

In this paper, recent results obtained on highly radiative shocks generated in a xenon filled gas cell using the GEKKO XII laser facility are presented. Data show extremely high shock velocity (≥150 km/s) never achieved before in gas. Preliminary analyses based on theoretical dimensionless numbers a...

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Bibliographic Details
Published in:Astrophysics and space science 2011-11, Vol.336 (1), p.213-218
Main Authors: Dizière, A., Michaut, C., Koenig, M., Gregory, C. D., Ravasio, A., Sakawa, Y., Kuramitsu, Y., Morita, T., Ide, T., Tanji, H., Takabe, H., Barroso, P., Boudenne, J.-M.
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Fluid mechanics
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Plasma
Radiation
Shock waves
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Xenon
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Summary:In this paper, recent results obtained on highly radiative shocks generated in a xenon filled gas cell using the GEKKO XII laser facility are presented. Data show extremely high shock velocity (≥150 km/s) never achieved before in gas. Preliminary analyses based on theoretical dimensionless numbers and numerical simulations suggest that these radiative shocks reach a new radiative regime where the radiative pressure plays a role in the dynamics and structure of the shock. A major effect observed is a strong anisotropic emission in the downstream gas. This unexpected feature is discussed and compared to available 2D radiation hydrodynamic simulations.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-011-0653-6