Three-Dimensional Reaction Zones of Heterogeneous Explosives

5 Three-Dimensional Reaction Zones of Heterogeneous Explosives 

Detonations of the condensed homogeneous explosives nitromethane and liquid TNT were found to exhibit unstable periodic behavior. The steady-state Chapman-Jouguet theory of the detonation process will not properly describe the behavior of homogeneous explosives that exhibit such unstable behavior. 

The heterogeneous explosive reaction zone that has been the most studied is PBX-9404 (94/3/3 HMX/Nitrocellulose/Tris-/3-Chloroethyl phosphate). A summary of the estimated reaction zone thickness and Von Neumann spike pressure is given in Table 1.4 along with the calculated reaction zone parameters using the solid Arrhenius HMX constants of 

8 kcal/mole for activation energy and 3 x reference 9 and Chapter 4. 

Interferometer 0.01 Infra Red Radiometry 0.02-0.03 Metal Free Surface 0.01 Visar (9501) 0.017-0.053 

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Three-Dimensional Reaction Zones of Heterogeneous Explosives TABLE 1.4 PBX-9404/9501 Reaction Zone... 

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