The existence of self-sustaining detonation in an evacuated suspension of the particles of a secondary explosive is shown experimentally. The experiments with HMX were performed in a vertical shock tube of diameter 0.07 m and length 7 m in the range of volume-average particle concentrations 0.32-0.9 kg/m~3. It is shown that the vacuum-detonation velocity does not almost depend on the volume-average concentration of particles and it is (1750 +- 50) m/sec and that the pressure profile of a vacuum-detonation wave is smooth. The data on the electric conductivity of vacuum-detonation products and the length of the reaction zone are given.
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机译：实验表明，在排空的二次炸药颗粒悬浮液中存在自持爆炸。用HMX在直径为0.07 m，长度为7 m的垂直冲击管中进行，该冲击管的体积平均颗粒浓度为0.32-0.9 kg / m〜3。结果表明，真空爆轰速度几乎不取决于颗粒的体积平均浓度，而是（1750±50）m / sec，并且真空爆轰波的压力分布是平滑的。给出了真空爆轰产物的电导率和反应区长度的数据。
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