Richtmyer Meshkov Instability Reshock Experiments Using Laser-Driven Double-Cylinder Implosions

Details Richtmyer Meshkov Instability Reshock Experiments Using Laser-Driven Double-Cylinder Implosions Richtmyer Meshkov Instability Reshock Experiments Using Laser-Driven Double-Cylinder Implosions

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.298..327t&link_type=abstract

Astrophysics and Space Science, Volume 298, Issue 1-2, pp. 327-331

Astronomy and Astrophysics

Astrophysics

4

Richtmyer–Meshkov, Cylindrical Implosion, Experiment, Simulation, Richtmyer&Ndash, Meshkov

Scientific paper

As a shock travels through the interface between substances of different densities, existing perturbations can grow via the Richtmyer Meshkov (RM) instability. The study of the RM instability in a convergent geometry leads to a better understanding of implosions applicable to inertial confinement fusion and various astrophysical events, such as core-collapse supernovae. We present results of laser-driven double-cylinder implosions performed at the Omega laser facility with an emphasis on sending a second shock through an already shocked RM unstable interface. The uniform reshock of a cylindrical interface is achieved by inserting a second cylinder inside the first that reflects the inwardly traveling shock and causes it to interact a second time with the unstable interface. We present an analysis of the instability growth as a function of shock strength and zero-order perturbation behavior during reshock.

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