Detonation wave profiles measured in plastic bonded explosives using 1550 nm photon doppler velocimetry (PDV)

Journal Article · Thu Jan 01 04:00:00 EST 2009

OSTI ID:991280

Gustavsen, Richard L ^[1]; Bartram, Brian D ^[1]; Sanchez, Nathaniel J ^[1]

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1. Los Alamos National Laboratory

We present detonation wave profiles measured in two TATB based explosives and two HMX based explosives. Profiles were measured at the interface of the explosive and a Lithium-Fluoride (LiF) window using 1550 nm Photon Doppler Velocimetry (PDV). Planar detonations were produced by impacting the explosive with a projectile launched in a gas-gun. The impact state was varied to produce varied distance to detonation, and therefore varied support of the Taylor wave following the Chapman-Jouget (CJ) or sonic state. Profiles from experiments with different support should be the same between the Von-Neumann (VN) spike and CJ state and different thereafter. Comparison of profiles with differing support, therefore, allows us to estimate reaction zone lengths. For the TATB based explosive, a reaction zone length of {approx} 3.9 mm, 500 ns was measured in EDC-35, and a reaction zone length of {approx} 6.3 mm, 800 ns was measured in PBX 9502 pre-cooled to -55 C. The respective VN spike state was 2.25 {+-} 0.05 km/s in EDC-35 and 2.4 {+-} 0.1 km/s in the cooled PBX 9502. We do not believe we have resolved either the VN spike state (> 2.6 km/s) nor the reaction zone length (<< 50 ns) in the HMX based explosives.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 991280
• Report Number(s): LA-UR-09-04939; LA-UR-09-4939
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DETONATION WAVES
EXPLOSIONS
EXPLOSIVES
PHOTONS
PLASTICS
PROJECTILES
TATB
WINDOWS