摘要
在容积为20 m3的烟箱中分别喷撒30 g纳米银粉,通过测量其在不同时刻的激光透过率和烟幕质量浓度,测得纳米银粉对1.06μm近红外和10.6μm远红外激光的质量消光系数分别为1.833 m2.g-1和1.474 m2.g-1;利用红外热像仪测试了纳米银粉在8～12μm波段对靶标红外热像的遮蔽效果。结果表明,纳米银粉对双波长红外激光系统、红外热像仪均具有显著的干扰作用,是一种极具潜力的宽波段烟幕干扰材料。
After 30g nano-Ag powder was sprayed into 20 m^3 smoke screen chamber, its transmission rate of laser and mass concentration were measured in different time. Consequently, the mass extinction coefficients of nano-Ag powder to 1.06μm near IR and 10.6μm far IR laser were calculated, which were 1.833 m^2·g^-1 and 1.474 m^2·g^- 1. Besides, The screening effect of nano-Ag powder smoke screen to IR thermal imaging of target was tested by IR thermal imaging set in 8-12 μm. The experimental results showed that nano-Ag powder has excellent interference capability to 1.06 μm and 10.6 μm IR laser and IR thermal imaging set, and has a great potential as a smoke interference material in broad band.
出处
《红外技术》
CSCD
北大核心
2008年第5期301-304,共4页
Infrared Technology
关键词
纳米银粉
烟幕
红外消光
宽波段
nano-Ag powder
smoke screen
IR extinction
broad band
