重金属叠氮化合物引发反应中能量守恒对Laser辐射波长的依赖性
Dependence of Energy Thresholds on Laser Radiation Wavelength in Initiation of Heavy Metal Azides
摘要：
研究了银和铅叠氮化物（片状、线状晶体和致密粉末）在激光脉冲辐射下的爆炸起爆行为。测量了1064nm、532nm、354.7nm、266nm四种激光辐射谐波对应的起爆能量阈值。样品都未覆盖和覆盖有透明电介质（石英板）的压缩力高达0.5GPa的启动。在透明的光谱区域（第一和第二激光谐波）的重金属叠氮化物基质的影响覆盖样品表面上的板上的引发能量阈值是微不足道的，而在带隙吸收（第四谐波）的区域强烈依赖的引发阈值上是否照射下的表面是未覆盖或覆盖。所得到的结果已被认为与帐户的透明板上的气体动力学卸载的热站点，这是在激光辐射的带隙吸收中形成的薄近表面层的影响。
英文摘要：
The behavior of silver and lead azides (scaly and threadlike crystals, and compacted powders) in initiation of explosive decomposition by laser pulsed radiation has been investigated. Initiation energy thresholds in irradiation at wavelengths of 1064 nm, 532 nm, 354.7 nm, 266 nm corresponding to four laser radiation harmonics have been measured. Samples both uncovered and covered with a transparent dielectric (a quartz plate) with the compressive force of up to 0.5GPa were initiated. In the transparent spectral region (the first and second laser harmonics) of the heavy metal azide matrix the effect of covering the sample surface with a plate on initiation energy threshold was insignificant, whereas, in the region of bandgap absorption (the fourth harmonic) strong dependence of the initiation threshold on whether the surface under irradiation is uncovered or covered. The results obtained have been considered with the account of the influence of the transparent plate on gas-dynamic unloading of the thermal site, which is formed in the bandgap absorption of laser radiation in a thin near-surface layer.
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