Accession Number : ADA182229

Title :   The Interaction of Small Particles with Laser Beams.

Descriptive Note : Annual rept. 9 Jul 85-9 Oct 86,

Corporate Author : FLORIDA UNIV GAINESVILLE SPACE ASTRONOMY LAB

Personal Author(s) : Misconi,Nebil Y ; Ratcliff,Keith F ; Rusk,E T ; Oliver,J P

PDF Url : ADA182229

Report Date : 18 Feb 1987

Pagination or Media Count : 191

Abstract : This report summarizes our research under Award/Contract F49620-85-C-0117 which deals with the interaction of a CW Argon laser beam with a variety of layers of small (few microns to a few hundred microns) particles formed out of silicates which are highly transparent over the range of wavelengths 0.22 - 2.2 micro. Thicknesses of these layers range from 0.25 mm to 2mm. The nature of this research is to characterize the scattering of laser light by these layers. It was found that a layer of natural sand reflects more laser light than suprasil, flexolite glass, tinted commercial glass, or crown glass spheres and reflectivity varied inversely with particle size. Quantitative measurements were carried out and results on thickness of layers and size of particles are tabulated. Curves of intensity vs. scattering angle are displayed for each layer.

Descriptors :   *LASER BEAMS, *SILICATES, *LIGHT SCATTERING, *AEROSOLS, ARGON LASERS, CONTINUOUS WAVE LASERS, INTERACTIONS, PARTICLE SIZE, LAYERS, REFLECTIVITY, GLASS, SPHERES, SAND, MEASUREMENT, ANGLES, MICROMETERS, THICKNESS

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE