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Analysis of the influence of radiation polarization type on the absorptive capacity and propulsive motion of microparticles in the light field of СО 2 laser

Analysis of the influence of radiation polarization type on the absorptive capacity and... Abstract The influence of the linear and circular polarization of laser radiation on the absorption coefficient of single spherical AISI-304 steel particles was theoretically analyzed. It is shown that the absorbed power of the laser beam depends on the particle sizes and on the location of particles in the light field. The influence of the laser-induced evaporation of the material on the regularities of the reactive motion of particles at a power density in the beam exceeding some threshold value is established. The direction of the action of the reactive force is directly related to the nonuniform distribution of the absorbed laser-emitted power and with the recoil pressure of the vapors moving away from the curvilinear surface of particle. A description to the mechanism of deflection of the particle’s reactive force vector due to the vapor recoil pressure in the light field of a Gaussian beam from the direction of the beam action is given. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Analysis of the influence of radiation polarization type on the absorptive capacity and propulsive motion of microparticles in the light field of СО 2 laser

Thermophysics and Aeromechanics , Volume 25 (4): 9 – Jul 1, 2018

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Publisher
Springer Journals
Copyright
2018 Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S086986431804008X
Publisher site
See Article on Publisher Site

Abstract

Abstract The influence of the linear and circular polarization of laser radiation on the absorption coefficient of single spherical AISI-304 steel particles was theoretically analyzed. It is shown that the absorbed power of the laser beam depends on the particle sizes and on the location of particles in the light field. The influence of the laser-induced evaporation of the material on the regularities of the reactive motion of particles at a power density in the beam exceeding some threshold value is established. The direction of the action of the reactive force is directly related to the nonuniform distribution of the absorbed laser-emitted power and with the recoil pressure of the vapors moving away from the curvilinear surface of particle. A description to the mechanism of deflection of the particle’s reactive force vector due to the vapor recoil pressure in the light field of a Gaussian beam from the direction of the beam action is given.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Jul 1, 2018

References