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Investigation of multiple scattering effects in aerosols
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Deepak, A. |
| Copyright Year | 1980 |
| Description | The results are presented of investigations on the various aspects of multiple scattering effects on visible and infrared laser beams transversing dense fog oil aerosols contained in a chamber (4' x 4' x 9'). The report briefly describes: (1) the experimental details and measurements; (2) analytical representation of the aerosol size distribution data by two analytical models (the regularized power law distribution and the inverse modified gamma distribution); (3) retrieval of aerosol size distributions from multispectral optical depth measurements by two methods (the two and three parameter fast table search methods and the nonlinear least squares method); (4) modeling of the effects of aerosol microphysical (coagulation and evaporation) and dynamical processes (gravitational settling) on the temporal behavior of aerosol size distribution, and hence on the extinction of four laser beams with wavelengths 0.44, 0.6328, 1.15, and 3.39 micrometers; and (5) the exact and approximate formulations for four methods for computing the effects of multiple scattering on the transmittance of laser beams in dense aerosols, all of which are based on the solution of the radiative transfer equation under the small angle approximation. |
| File Size | 7315012 |
| Page Count | 188 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810019187 |
| Archival Resource Key | ark:/13960/t7qp0xx7s |
| Language | English |
| Publisher Date | 1980-05-30 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Optical Measurement Particle Size Distribution Light Visible Radiation Scattering Aerosols Infrared Lasers Radiative Transfer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
