Prompt laser ignition and transition to detonation in a secondary explosive
Prompt laser ignition and transition to detonation in a secondary explosive
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快速激光点火并过渡到二次炸药的爆炸
DOI：
10.2172/67499
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
W. Trott
中科院分区：
文献类型：
--
作者：
R. E. Setchell;W. Trott
在以前的研究中，开发了一种两阶段的方法来实现次级炸药的爆轰，其中点火由低能热线或激光二极管引起。在目前的研究中，这种方法进行了检查，在一些细节的情况下，由脉冲，固态（棒）激光点火。最初的一系列实验使用Nd/玻璃，Nd/YAG，和Ti/蓝宝石激光器，以调查点火的石墨掺杂的HMX在高度受限的光学夹具，包括一个快速的压电压力传感器。实验参数包括激光功率历程和炸药柱长度。这些实验的结果指导了第二系列的实验，在这些实验中，点火柱炸药由与低密度HMX或某种其他材料的过渡柱接触的薄破裂盘终止。过渡柱用压电到达时间检测器终止，用于确定总功能时间。研究的参数包括不同的激光源，破裂盘厚度，和过渡柱爆炸特性。总的功能时间小于50微秒，得到的各种参数研究建立的趋势表明，可以实现功能时间的进一步减少。
A two-stage approach to achieving detonation in a secondary explosive was developed in previous studies in which ignition resulted from low-energy hot wires or from laser diodes. In the current study, this approach was examined in some detail for the case of ignition by a pulsed, solid-state (rod) laser. An initial series of experiments used Nd/glass, Nd/YAG, and Ti/sapphire lasers to investigate the ignition of graphite-doped HMX in highly confined optical fixtures that incorporated a fast piezoelectric pressure transducer. Experimental parameters included the laser power history and the explosive column length. The results of these experiments guided a second series of experiments in which the ignition column explosive was terminated by a thin rupture disc in contact with a transition column of low-density HMX or some other material. The transition column was terminated with a piezoelectric time-of-arrival detector for determining overall function times. Parameters investigated included different laser sources, rupture disc thicknesses, and the transition column explosive characteristics. Overall function times less than 50 microseconds were obtained, and trends established by the various parameter studies indicate that further reductions in function time can be achieved.