Journal
SHOCK COMPRESSION OF CONDENSED MATTER - 2015
Volume 1793, Issue -, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4971472
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Funding
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
- Joint Department of Defense/Department of Energy Munitions Technology Development Program
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Hexanitrostilbene (HNS) films were deposited onto polycarbonate substrates using vacuum thermal sublimation. The deposition conditions were varied in order to alter porosity in the films, and the resulting microstructures were quantified by analyzing ion-polished cross-sections using scanning electron microscopy. The effects of these changes in microstructure on detonation velocity and the critical thickness needed to sustain detonation were determined. The polycarbonate substrates also acted as recording plates for detonation experiments, and films near the critical thickness displayed distinct patterns in the dent tracks that indicate instabilities in the detonation front when approaching failure conditions.
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