Initiation and Detonation Physics on Millimeter Scales

Philllips, D F ; Benterou, J J ; May, C A

关键词: CHEMICAL EXPLOSIVES;    EXPLOSIONS;    LASERS;    LAWRENCE LIVERMORE NATIONAL LABORATORY;    PHYSICS;    STREAK CAMERAS;    TANKS;    TATB;    VELOCITY;   

DOI  :  10.2172/1047775
RP-ID  :  LLNL-TR-541891
PID  :  OSTI ID: 1047775
Others  :  TRN: US201216%%701

美国|英语

来源: SciTech Connect

【 摘 要 】

The LLNL Detonation Science Project has a major interest in understanding the physics of detonation on a millimeter scale. This report summarizes the rate stick experiment results of two high explosives. The GO/NO-GO threshold between varying diameters of ultra-fine TATB (ufTATB) and LX-16 were recorded on an electronic streak camera and analyzed. This report summarizes the failure diameters of rate sticks for ufTATB and LX-16. Failure diameter for the ufTATB explosive, with densities at 1.80 g/cc, begin at 2.34 mm (not maintaining detonation velocity over the entire length of the rate stick). ufTATB rate sticks at the larger 3.18 mm diameter maintain a constant detonation velocity over the complete length. The PETN based and LLNL developed explosive, LX-16, with densities at 1.7 g/cc, shows detonation failure between 0.318 mm and 0.365 mm. Additional tests would be required to narrow this failure diameter further. Many of the tested rate sticks were machined using a femtosecond laser focused into a firing tank - in case of accidental detonation.