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Scattering for Charged Multisphere Structure Located in Plane Wave/Gaussian Beam

Scattering characteristics for charged multisphere structure illuminated by a plane wave/a Gaussian beam are studied on the basis of generalized Lorenz-Mie theory. The incident, internal and scattered fields for each sphere in an arbitrarily incident Gaussian beam are expressed in terms of vector spherical wave functions (VSWFS) expansion form. Making use of the vector addition theorem of VSWFS, the scattering coefficients of total scattered fields for charged multisphere structure are deduced in detail. Taking charged carbon particles and water droplets for examples, numerical results of scattering intensity for different quantities of electric charge are shown and compared with uncharged case. A discussion of the effect of beam parameters on scattering intensity is presented.