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随着太赫兹波技术的发展,对其在各种大气条件下的传播特性的研究是很有必要的。本文利用扩散限制凝聚模型(DLA方法)模拟了组成烟尘气溶胶的簇团粒子,并利用广义Mie理论(GMM)方法计算了不同基本粒子个数的单个簇团粒子对波长分别为30μm、35μm和40μm的太赫兹波的散射特性。另外本文还利用蒙特卡罗方法模拟计算了浓度较大的烟尘气溶胶对太赫兹波的衰减特性并将结果与波长为6.2μm的红外波段的结果进行比较,结果显示,太赫兹波在烟尘气溶胶中传播的衰减要小的多,这也说明太赫兹波更加适合在烟尘气溶胶中传播。
With the development of terahertz wave technology, it is necessary to study the propagation characteristics under various atmospheric conditions. In this paper, the diffusion-limited agglomeration model (DLA method) is used to simulate the cluster particles that constitute the aerosol of soot and aerosol, and the single cluster particles with different basic particle numbers are calculated by the generalized Mie theory (GMM) 40μm terahertz wave scattering characteristics. In addition, the Monte Carlo method is also used to simulate the attenuation characteristics of terahertz waves at a relatively high concentration, and the results are compared with the results of the infrared band at a wavelength of 6.2 μm. The results show that the terahertz waves in soot The attenuation of propagation in the sol is much smaller, which also shows that terahertz waves are more suitable for spreading in the aerosol of soot.