Abstract:
The detonation of mixtures of highly dispersed PETN with sodium bicarbonate with a mass fraction of the latter up to $90\%$ is investigated using radio-interferometric and electron-optical (NANOGATE-22) methods along with a method using a PVDF pressure sensor. The experimental results obtained indicate the possibility of the existence of various detonation regimes in mixtures. If the mass fraction of $\mathrm{NaHCO}_3\le 85\%$, the detonation wave propagation is mainly due to shock compression. At a higher $\mathrm{NaHCO}_3$ content $(90\%)$, the jets of explosion products predominantly serve as propagation agents.
