Laser Ignition Characteristics of In-situ Synthesis of Copper Azide Micro-charge
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摘要:为有效提高铜叠氮化物使用的安全性，对原位合成铜叠氮化物微装药的激光二极管点火特性进行了研究，对不同铜转化率的铜叠氮化物微装药在不同功率密度下的激光点火能量进行了测试，并拟合其激光点火判据。研究结果表明：相比纯叠氮化铜，原位合成的铜叠氮化物中由于存在未反应纳米铜核，激光点火能量明显降低，最低可达到20μJ以下；叠氮化反应铜的转化率越高，铜叠氮化物微装药的激光点火感度越高；在激光功率密度大于4.0W·mm-2时，铜叠氮化物微装药可控制在50μs以内点火；试验获得的铜叠氮化物的James形式的起爆判据为2.62/q+16.4/E=1。
Abstract:To effectively improve the application safety of in-situ copper azide, the laser diode ignition characteristics of in-situ reaction synthesis of copper azide micro-charge were studied, the laser ignition energy of copper azide micro-charge with different conversion rate of copper were tested under different power density of laser, and the laser ignition criterion was fitted. The result shows that, due to the presence of unreacted nano-copper cores in copper azide, the laser ignition energy of in-situ copper azide is reduced significantly compared to that of pure copper azide, the lowest can be below 20μJ; The higher conversion rate of copper, the higher laser ignition sensitivity of the in-situ copper azide micro-charge; When laser power density is greater than 4.0W·mm-2, the copper azide micro-charge can be ignited within 50μs. The copper azide initiation criterion of James form is 2.62/q+16.4/E=1.
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