Small Particle Scattering and Absorption
Abstract
The aim of this contract is to extend our knowledge of the scattering and absorption of electromagnetic energy by aerosol particles. Particular interest is in mm wave, infrared and optical scattering for particles of dimensions ranging from much smaller than to comparable with the incident wavelengths. The work proposed and accomplished was all theoretical and computational. An overview is given of the theoretical and computational research on electromagnetic scattering by small particles. Results that have been published in journal articles are described concisely. These include various special techniques to treat particles which are very thin compared to the incident wavelength, Lo. Also in this group of published results, is a study of the internal, surface, and near fields for capped cylindrical particles, all of whose dimensions are small compared to Lo and for which Lo is in a wavelength range such as to excite plasmon or polariton resonances in the particle. Unpublished work along these lines is described in detail in an appendix. This more recent work considers the effects on the resonant modes of particle proximity and aggregation and also considers individual spheres with spherical holes either inside the spheres or forming bites in the sphere surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1989
- Accession Number
- ADA213168
Entities
People
- Herschel Weil
Organizations
- University of Michigan