Evolution of the Richtmyer-Meshkov process driven by a cylindrically convergent shock
POSTER
Abstract
A platform has been developed to investigate convergent instability growth using the Z machine at Sandia National Laboratories. Cylindrical liners filled with liquid deuterium are imploded with 23 MA, driving a converging shock that interacts with an on-axis beryllium rod. The passage of the shock through the beryllium-deuterium interface initiates the Richtmyer-Meshkov process, seeded by machining single- and multi-mode axial perturbations in the beryllium rod. We present x-ray images capturing the linear and non-linear evolution of the instability, including a complex re-shock phase initiated by the on-axis reflection of the shock. Data are compared to linear theory and simulations.
*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.
Presenters
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David A Yager-Elorriaga
- Sandia Natl Labs
- Sandia National Laboratories