| Facts and Figures | |||
| name of sample | Fly ash | ||
| origin | inorganic fraction (mainly clays) of the combustion | ||
| of powdered coal in an electricity power plant | |||
| main constituents | clay minerals | ||
| particle size | distributions measured with laser diffraction | ||
| reff=3.65 micrometer, veff =10.9 | |||
| particle shape | aggregates of spheres (SEM image) | ||
| refractive index | estimated to be in the range: | ||
| 1.5-1.7 - i0.001-0.00001 | |||
| color | grey brown powder | ||
| scattering matrix | 5-173 degrees scattering angle | ||
| wavelength | 441.6 nm (figure) | ||
| 632.8 nm (figure) | |||
| article | Experimental determination of scattering matrices of randomly | ||
| oriented fly ash and clay particles at 442 and 633 nm | |||
| O. Muņoz, H. Volten, J. F. de Haan, W. Vassen, J. W. Hovenier | |||
| Journal of Geophysical Research, 106,22,833-22,844,2001 | |||
