Sharp change of failure diameter value at the transition from stable to unstable detonation of liquid explosives

摘要

It has been found out that the value of detonation failure diameter of liquid explosives is not a monotonically decreasing function of their power. There are two distinctive regions, well defined boundary being evident between these two regions such that the value corresponding to slightly more power explosive far exceeds that corresponding to slightly weaker explosive. It turns out that detonation of all explosives falling in the power explosives region is kinetically stable, whereas detonation of liquid explosives falling in the weak explosives region is kinetically unstable. Essential distinctions of the proceeding of breakdown processes of chemical reaction zone of stable and unstable detonations under the effect of lateral rarefaction waves have been advanced to be responsible for the sharp change of the failure diameter value at the transition from unstable to stable detonation.