Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.307..139m&link_type=abstract
Astrophysics and Space Science, Volume 307, Issue 1-3, pp. 139-145
Astronomy and Astrophysics
Astrophysics
11
Laser-Cluster Interactions, Laser-Driven Shocks And Discontinuities, Hydrodynamic And Radiative Plasma Instabilities, Laboratory Astrophysics, Radiative Blast Waves, Blast Waves
Scientific paper
We describe experiments that investigate the capability of an experimental platform, based on laser-driven blast waves created in a medium of atomic clusters, to produce results that can be scaled to astrophysical situations. Quantitative electron density profiles were obtained for blast waves produced in hydrogen, argon, krypton and xenon through the interaction of a high intensity (I ≈ 1017 Wcm-2), sub-ps laser pulse. From this we estimate the local post-shock temperature, compressibility, shock strength and adiabatic index for each gas. Direct comparisons between blast wave structures for consistent relative gas densities were achieved through careful gas jet parameter control. From these we investigate the applicability of different radiative and Sedov-Taylor self-similar solutions, and therefore the (ρ,T) phase space that we can currently access.
Dunne Mike
Gumbrell Edward T.
Hohenberger Matthias
Lazarus James
Moore Alastair S.
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