红磷与纳米氧化铝组合烟幕对10.6μm激光的消光系数研究

Extinction Coefficient of Red Phosphorus Smoke Combined with Nanometer Alumina to 10.6 μm Laser Emission

为了提高红磷烟幕对10.6μm激光的消光性能,在中型烟幕试验柜中分别测试了纳米氧化铝气溶胶、红磷及其组合烟幕对10.6μm激光的质量消光系数。在空气相对湿度为40%的条件下,纳米氧化铝气溶胶、红磷及其组合烟幕对入射功率为1.0W的10.6μm激光的平均质量消光系数分别为0.222,0.298,0.449m2.g-1。根据试验结果,纳米氧化铝气溶胶和红磷烟幕组合使用后可以显著改善纳米氧化铝粉体的分散特性,并使得红磷烟幕对该波段激光的质量消光系数提高50.7%。

In order to improve the extinction performance of red phosphorus smoke to 10.6 μm laser emission,the extinction coefficients of nanometer alumina aerosols, red phosphorus smoke and their combined smoke to 10.6 μm laser emission were tested in a middle smoke chamber. Results show that, under the air relative humidity of 40% ,the extinction coefficients of nanometer alumina aerosols, red phosphorus smoke and their combined smoke to 10. 6 μm laser emission with incident power of IW are 0.222 m^2 · g^-1 ,0.298 m^2 · g^-1 and 0. 449 m^2 · g^-1, respectively. It indicates that nanometer alumina combined with red phosphorus smoke improves the diffusion performance of nanometer alumina remarkably, and the extinction coefficient of the combined smoke enhances by 50.7% than that of red phosphorus.