【摘要】 利用Aden-Kerker光散射理论经重整后的系列方程,对非烟火型烟雾遮蔽系统PF(酚醛树脂)空心复合微球分散体系,在红外波区的消光特征进行了数值模拟。结果表明,空心复合微粒相对于同外径的实心粒子,质量消光系数有较大提高。波长在5～14μm范围内,理论计算与实测的消光系数曲线有较好的吻合。更多还原

【Abstract】 To non-pyrotechnic screening smoke more attetion is now being paid in the field of modern photoelectric antagonism. In the present paper numerical simulation of the extinction characteristics of PF (phenolic-formaldehyde resin) hollow particles in the infrared region is carried out applying the transformed equations of the Aden-Kerker’s scattering theory. The results show that the mass extinction coefficient of the hollow particles increases to a great extent when contrasted with that of the solid ones under the same conditions but the particle diameter corresponding to the maximum extinction coefficient of the hollow particles is larger than that of the solid particles. A comparison between the computed and measured results of extinction coefficient was made for PF hollow particles in the 5～14μm wavelength region.更多还原