光纤光谱探针法测量炸药爆轰温度

Measurement of Detonation Temperature by Using Optic Fiber Probe

测量 TNT和海萨尔炸药的爆轰辐射光谱 ,对辐射光谱进行计算 ,得到爆轰温度 .用光纤探针采集爆轰辐射光 ,用光学多通道分析仪 ( optic multichannel analyzer,OMA)测量爆轰辐射的可见光光谱 ,对得到的光谱数据进行数学处理 ,用黑体辐射普朗克公式按最小二乘原则拟合爆轰光谱 ,得到爆轰温度 .密度 ρ为 1.4 84 g/cm3和 1.570 g/cm3的 TNT炸药拟合爆轰温度分别为 2 0 2 8.2 K和 2 0 86.1K,最小均方误差分别为 5.5和 6.9;密度 ρ为 1.72 0 g/cm3和 1.84 0 g/cm3海萨尔炸药拟合爆轰温度分别为 2 916.4 K和 30 63.5K,最小均方误差分别为 5.4和 5.3.TNT炸药的爆轰光谱中不含有线谱成分 ,可直接用普朗克公式拟合 ,并有较高精度 (均方误差小 ) ;海萨尔炸药爆轰光谱中含有线谱成分 ,经过平滑处理后再进行拟合 。

The detonation temperature is acquired by measuring and calculating the emission spectrum of detonation processes. The emission light wave is sampled by optic fiber probe(implanted in explosives) and the detonation spectrum is measured by optic multichannel analyzer(OMA) within the visible light band. The detonation temperature is derived from fitting the calculated emission spectrum of the temporal detonation processes with Plank blackbody formula. The detonation temperatures of TNT explosives with densities ρ = 1 484 g/cm 3 and ρ = 1 570 g/cm\+3 are 2 028\^2 K and 2 086\^1 K with the least square errors 5\^5 and 6\^9 respectively. The detonation temperatures of Hexal explosives with densities ρ = 1 720 g/cm 3 and ρ = 1 840 g/cm\+3 are 2 916\^4 K and 3 063\^5 K (least square errors are 5\^4 and 5\^3). There is no line type spectrum in the detonation spectra of TNT, so they can be fitted by Plank formula directly. But with Hexal, there are two distinct peaks in the spectrum, so the spectrum must be smoothed before fitting it to obtain a high accuracy.