Parker Gary R, Asay Blaine W, Dickson Peter M
Dynamic and Energetic Materials Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87025, USA.
Rev Sci Instrum. 2010 Jan;81(1):016109. doi: 10.1063/1.3284517.
The authors describe a method to capture optical data and construct digitized streak images for analysis of high-speed phenomena with unpredictable timing by using a high-speed video camera and software routines. Advances in high-speed video camera technology have led to development of cameras with frame rates (1 x 10(6) frames per second) and spatial resolution (1280 x 800 pixels) suitable to capture fast phenomena, such as detonation in high explosives (< or = 10 km s(-1)), on small enough scales to be convenient for laboratory experiments. Further, relatively long-duration recordings (> or = 1 s) are maintained in a rolling buffer in volatile memory allowing the entire frame sequence to be recorded pretrigger, thus obviating the need for precisely located diagnostic triggers. The method described was used to capture the progression of luminous reaction during the deflagration-to-detonation transition of the HMX-based (octahydro-1, 3, 5, 7-tetranitro-1, 3, 5, 7-tetrazocine) plastic bonded explosive (PBX) formulation during cookoff.
作者描述了一种通过使用高速摄像机和软件程序来捕获光学数据并构建数字化条纹图像的方法，用于分析具有不可预测时间的高速现象。高速摄像机技术的进步使得开发出了具有适合捕获快速现象的帧率（每秒1×10⁶帧）和空间分辨率（1280×800像素）的摄像机，这些现象比如高爆炸药中的爆轰（≤10 km s⁻¹），其规模小到足以方便进行实验室实验。此外，相对长时间的记录（≥1 s）被保存在易失性存储器的滚动缓冲区中，使得整个帧序列能够在触发前被记录，从而无需精确定位的诊断触发装置。所描述的方法被用于捕获基于HMX（八氢-1,3,5,7-四硝基-1,3,5,7-四氮杂环辛烷）的塑料粘结炸药（PBX）配方在烤燃过程中从爆燃到爆轰转变期间发光反应的进展情况。
