Effects of Geometry on Line Wave Generator Breakout Profiles Containing XTX-8003

We performed computer simulations of Line Wave Generator (LWG) experiments containing the extrudable PETN-based explosive, XTX-8003, using the Ignition and Growth model in ALE3D. Parameters for the model were modified from a highly loaded PETN-based explosive and verified against run-to-distance measurements from shock initiation tests. The LWG experiments used 2 mm sized explosively filled channels with output channel center-to-center spacings of 7.5 mm with airgaps in between to prevent cross-talk between channels. Studies examined the effect of channel and airgap geometries on the simultaneity of the detonation wave front emanating from the channels into an output slab of a second explosive (Composition B). Planarity of the detonation front in the output slab at increasing depths was also studied. We will present results of these studies, as well as findings from interactions between multiple LWGs in a stacked configuration. This work was performed under the auspices of the US DOE by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-768420.