Scattering and attenuation of electromagnetic waves by partly charged particles

作者：Zhou, Jun; Dou, X.; Xie, Li^*

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2018, 206: 55-62.

DOI：10.1016/j.jqsrt.2017.11.006

• Attenuation
• Electromagnetic wave (EMW)
• Partly charged particle
• Scattering problem

The scattering of electromagnetic waves (EMWs) by partly charged particles is investigated by Mie theory. For particles much smaller than the wavelength of EMW, the scattering properties are significantly affected by the net surface charges but are not affected by the location of charged area, and the extinction cross section and scattering cross section, as well as the signal attenuation due to charged particles, monotonously increase with the size of charged area and reach maximum when the particle is overall charged, as the surface charge densities is within several hundred mu C/m(2). Moreover, given the distribution of particle sizes a closer agreement between the theory and measurement of signal attenuation due to charged sand/dust storms can be achieved by taking the charges into consideration and assuming all particles have the same size of charged area and surface charge density in theory calculations.

• 出版日期2018-2
• 单位兰州大学