Explosive case

By definition, primary fragments are those that result from a break-up of the explosive casing in the event of a detonation. Usually these fragments are characterized by having high velocity and being comparatively small in size. 

In the constant-volume, adiabatic explosion case the entire explosive is converted instantaneously into products within the confines of the original explosive there is no shock wave propagation, and chemical energy is converted entirely into thermal energy without losses to the environment. 

INCIDENT 8.3.4.2 ACADEMIC CHEMIST SENTENCED IN EXPLOSIVES CASE ... 

J. Kemsley, More details emerge onUC Davis explosives case, February 11, 2013, http //cenblog.org/the-safety-zone/2013/02/more-details-emerge-on-uc-davis-explosives-case/, (accessed Dec 2014). 

J. Kemsley, David Synder sentenced in UC Davis explosives case. 

Clearly, in the thermal explosion case [ ] the underlying stochastic process is a pure death process, since the concentration of X can only decrease. We can therefore write the following Master equation for the probability P(X,t) ... 

On the other hand in the chemical explosion case [8] we deal with a birth and death process for which the Master equation reads... 

We have solved numerically the above Master equations and, in addition, we simulated the underlying stochastic processes using a Monte-Carlo type method. A first result is shown in Fig. 5 for the thermal explosion case. 

Similar results have been obtained for the stochastic behavior in the chemical explosion case [8]. In Pig. 7 we propose a useful visualization of the evolution, by plotting the "probability surface" P(X,t) in (X,t) space. 

In currently evolved compositions, recycling and disposal present no special difficulties because thermally degradable binders are used. Ideally, the binders undergo controlled thermal degradation so that the material can be easily removed from explosive casings for the purpose of efficient recycling of the base explosive or low pollution disposal of the entire item. 

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