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Updated: Apr 3, 2026

Research and Development of High-performance Explosives
Published on: February 20, 2016
Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a
D T Casey1, J L Milovich1, V A Smalyuk1
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Abstract:
Hydrodynamic instabilities can cause capsule defects and other perturbations to grow and degrade implosion performance in ignition experiments at the National Ignition Facility (NIF). Here, we show the first experimental demonstration that a strong unsupported first shock in indirect drive implosions at the NIF reduces ablation front instability growth leading to a 3 to 10 times higher yield with fuel ρR>1 g/cm(2). This work shows the importance of ablation front instability growth during the National Ignition Campaign and may provide a path to improved performance at the high compression necessary for ignition.
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