摘要
文章使用M ie散射理论,对粒径服从对数正态分布的雾状柴油的质量消光系数及其在可见光（0.3～0.8μm）、中/长波红外大气窗口（3～5μm和8～14μm）的平均质量消光系数进行了计算。研究了粒径分布参数对雾状油遮蔽性能的影响,结果表明当r0与被遮蔽（波段）波长接近且b0趋于1时,（波段平均）质量消光系数具有最大值。最后通过实验,研究了冷凝型雾状油（柴油）在以上三个波段的遮蔽性能,实验结果表明其对可见光具有较强的遮蔽作用,对远红外的遮蔽作用最弱,实验结果与理论分析相一致。
In this paper,using the Mie scattering theory,the mass extinction coefficients and the band mean mass extinction coefficients of the oil fog with the lognormal distribution are calculated in visible-light band（0.3～0.8μm） and the IR transmission windows（including 3～5μm and 8～14μm）.With the study of the relation between the parameters of the particles distributions and the mass extinction coefficients（or the band mean mass extinction coefficients）,the mass extinction coefficients or the band mean mass extinction coefficients are maximum when b0 closes to 1 and r0 is near to the extinction（wave band） wave-length.By the experiments,the extinct characteristics of the natural condensate oil（diesel oil） fog is studied.The results show that the natural condensate oil fog has the strongest extinct ability on visible-light band,and has the feeblest extinct ability on far IR band.The mean particle radius of the natural condensate oil fog approaches the wave length of the visible-light band.The experiment results are concordance with the theoretical analyzing.
出处
《激光与红外》
CAS
CSCD
北大核心
2007年第9期870-873,共4页
Laser & Infrared
关键词
雾状油
遮蔽
质量消光系数
烟幕
oil fog
extinction characteristics
the mass extinction coefficients
smoking
