| 气溶胶微粒红外消光特性的计算 |
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| 引用本文： | 李放 劳允亮. 气溶胶微粒红外消光特性的计算[J]. 北京理工大学学报, 1991, 11(3): 81-85 |
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| 作者姓名： | 李放 劳允亮 |
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| 作者单位： | 北京理工大学力学工程系(李放)，北京理工大学力学工程系(劳允亮) |
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| 摘 要： | 根据Mie光散射理论,对球形微粒物质在红外波段的消光参数进行计算,认为给定波长时,物质皆有一个合适的半径,使其质量消光系数达最大;该半径比消光效率峰值相应粒径小.估算了SiO_2、碳黑、石墨和Al粉在3～14μm波段的最大消光系数及相应粒径。
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| 关 键 词： | 气溶胶 红外 消光系数 散射效率 |
Calculation of Infrared Extinction Properties by Aerosol Particles |
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| Li Fang Lao Yunliang. Calculation of Infrared Extinction Properties by Aerosol Particles[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 1991, 11(3): 81-85 |
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| Authors: | Li Fang Lao Yunliang |
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| Affiliation: | Department of Mechanical Engineering |
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| Abstract: | Calculation of the extinction properties in the infrared region by aerosol particles is conducted according to Mie light scattering theory . The calculated results show that there is an optimal particle size corresponding with the maximun extinction coefficient for a selected material at a given incident wavelength , and the size is smaller than the one related to the summit value of the extinction efficiency . The maximum extinction coefficients of several materials : silicon dioxide , carbon black , graphite and aluminium powder , have been evaluated as illustrations . |
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| Keywords: | absorption factor / extinction coefficient scattering efficiency absorption efficiency particle size parameter |
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