An exploration of anomalous electrical noise in shocked cyclotrimethylenetrinitramine (RDX)-based explosives

M. J. Burns, B. A. Chidester
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Abstract

Gas gun shock experiments on cyclotrimethylenetrinitramine (RDX)-based explosive compositions that employ embedded gauge particle velocity tracers have noted a significant amount of electrical noise when compared to other explosive formulations. This paper reexamines previously published embedded gauge data on Cyclotols (60–80 wt. % RDX) to quantify the electromagnetic behavior of these materials. The primary observation is a fourfold increase in the electrical noise when Cyclotols are shocked above 4.22 ± 0.08 GPa. Electromagnetic gauge noise is also observed within particle velocity traces in reactive growth and off-Hugoniot shocks, although at higher pressures than the direct shock case, suggesting a temperature- or kinetically dependent transition. In all cases, the electrical noise disappears upon detonation. By comparing with the static high-pressure phase diagram of RDX, we interpret this change in electromagnetic behavior to be a change in the RDX crystal structure to a piezoelectric phase, although it is uncertain whether the γ or ε phase is responsible for the observed behavior.
对冲击式环三亚甲基三硝胺(RDX)爆炸物中异常电噪声的探索
与其他爆炸物相比,使用嵌入式粒度仪粒子速度跟踪器对基于环三亚甲基三硝胺(RDX)的爆炸物成分进行的气枪冲击实验发现了大量的电噪声。本文重新审查了以前公布的有关 Cyclotols(60-80 wt.主要观察结果是,当 Cyclotols 受到高于 4.22 ± 0.08 GPa 的冲击时,电噪声增加了四倍。在反应生长和非胡戈尼奥特冲击的粒子速度轨迹中也观察到了电磁量规噪声,尽管压力比直接冲击的情况要高,这表明存在温度或动力学依赖性转变。在所有情况下,电噪声都会在爆炸后消失。通过与 RDX 的静态高压相图进行比较,我们将这种电磁行为的变化解释为 RDX 晶体结构向压电相的变化,尽管尚不确定观察到的行为是由γ 相还是ε 相引起的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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