Polarized infrared emissivity from dew droplets on a surface.
We model the infrared polarization emissivity from spherical particles on a plane surface. The emissivity and polarization is primarily a function of the density of particles multiplied by their cross-sectional area. The presence of particles tends to reduce the polarization. As the emission angle increases from near-normal incidence, the polarization tends to pass through a maximum, followed by a minimum and a final sharp rise at near grazing angles. The mechanism for this structure is the shadowing of different portions of the spherical particles by other particles.
Videen
Gorden
G
Army Research Laboratory, AMSRL-IS-EE, 2800 Powder Mill Road, Adelphi, Maryland 20783-1197, USA. gvideen@arl.army.mil