Study Of The Properties And Analysis Of The Model Of The Side-Scattered Laser Radiation In The Multiple Particles Field

The researches on the properties of a laser radiation side-scattered by the multiple particles distributed randomly have extensive applications in modern science and engineering. The light scattering properties of the multiple particles field and its mathematical model description are studied in this dissertation. The linearly polarized and circularly polarized He-Ne laser radiation having the same wave-length incidence the field of multiple particles distributed randomly to create side-scattering light and on the basis of the experiment of measuring the scattering light intensities, the properties of scattered radiation are acquired, and the Muller-Stokes matrix mathematical model is developed to descript the properties. The properties of the radiation side-scattered by the multiple particles distributed randomly deducing from the model are in accordance with the experimental results.In order to realize the subjects, a series of research have been done as below: The experiment system used to study the properties of the side-scattered radiation in the multiple particles field is designed; the side-scattered radiation intensities of different polarizations are measured in experiments when using different polarization light incidence different volume concentration liquids consisted of particles of different diameters, the distributions of the intensities and the polarizations of the side-scattered radiation versus scattering angles are acquired and its variation regulations are studied; the mathematical model of the Muller-Stokes matrix to descript the multiple scattering is developed , many characteristics of the side-scattering radiation of the multiple particles field are revealed by the model, and the properties of the side-scattered radiation deducing from the model are in accordance with the experimental results, and then the simplified mathematical representation of the particle scattering is realized by using the Muller-Stokes matrix. By calculating the experimental data using this algorithm, the results show that the intensity of scattered radiation is axial symmetric, and the variations of the characteristics of scattered radiation and the matrix elements representing the scattering characteristics depend primarily upon particle size; in addition, the fraction of the scattering varies dramatically with particle diameters. This Muller-Stokes matrix algorithm regards the scattering field as an optical system, giving the simplified description of the scattering effect of the polarized incidence radiation, showing the information of the scattering characteristics in the plane perpendicular to the direction of the incidence light.The researches of the properties of the side-scattered radiation in the multiple particles field and the developed mathematical model of the multiple scattering have important reference value either for studying radiation scattering especially studying the theories and applications of multiple particles' laser radiation scattering or for practically applying the laser scattering technologies such as the measurement of the blood sugar concentration of the diabetics, the measurement of the missle or rocket plumes compositions, concentrations and its varying corresponding to time or space, and the forecast of the sandstorm weather, etc.