Accession Number:

ADA246368

Title:

Linear and Non-Linear Response of Liquid and Solid Particles to Energetic Radiation

Descriptive Note:

Final rept.,

Corporate Author:

NEBRASKA UNIV LINCOLN

Report Date:

1991-03-11

Pagination or Media Count:

441.0

Abstract:

The principal purpose of the research is to investigate the linear and non-linear laser interaction with small aerosols and solid particles. Experimental work is devoted to excimer laser beam interaction with small droplets of water, methanol, and fog oil at irradiances up to 200 GWattscm2. Also of interest in this research is the interactions with solid particles including A12O3, SiC, glass spheres, A1 spheres, CaF2 and W particles at both atmospheric and reduced pressures. Special attention is given to understanding the dynamics of the interaction processes by using a fast streak camera and excimer laser imaging. Jointly with the experimental work is the problem of understanding the electromagnetic interaction of focused laser beams with matter. Emphasis is given to developing computer codes to calculate internal and near electromagnetic fields for planefocused laser beams incident upon spheres. Another phase of this investigation is devoted to theoretical modeling the laser imaging system used to obtain nanosecond time scale shadow images of exploding droplets. In addition, theoretical models for both polarized and unpolarized particle thermometry are developed.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE