In the first Born approximation, differential cross sections of bremsstrahlung passing through an external homogeneous electric field were obtained and numerically analyzed [1]. Two cases of electron motion in an external field are considered: 1.) the electrons emitted by the source fall on the potential barrier of the external field, passing through the lattice of Coulomb centers. 2.) the emitted electrons are accelerated by an external electric field. And after passing through the layers, the Coulomb centers are absorbed by an absolutely black wall (located at a macroscopic distance from the scattering centers). Different configurations of elementary cells are considered. It is shown that when the geometry of the cells is changed, the structure of the bremsstrahlung, due both to the superposition of the motion of the emitted particles in the field of the lattice centers and the external field, and to the interference reflected from the potential barrier of the radiating particles, varies noticeably.
The theoretical analysis of the light induced mass transport task was executed in the nanosuspension in a homogeneous light field. As a result of the analytical solution of the light induced mass transport task it was obtained an expression for the deflection angle of the beam in a pseudo-prism. The using of high intensities of the reference beam allows significantly increase the efficiency of the beam deflection method. The results are relevant in the study of the dispersed liquid media, as well as optical diagnostics of such materials.
The theoretical analysis of the light-induced mass transport task was executed in the dispersed medium in a homogeneous light field. We have discussed the model of sedimentation of nanoparticles by using the laser effect in liquid. It was received the solution of one-dimensional task of the light induced mass transfer as depending on intensity of laser beam. The proposed model of sedimentation of nanoparticles is relevant in the study of dispersed liquid-phase media, as well as in the optical diagnostics of such materials.
Nonlinear optical techniques are widely used for the optical diagnostics of materials. The thermo-induced pseudo-prism method is used to study of the two-component materials. It is measured the angle of the light beam in the material with the thermo-induced refractive index gradient. This paper proposes a way to create pseudo-prisms in the nanodispersive liquid through the light radiation pressure. In the dispersed environment there is a specific mechanism of optical nonlinearity based on the redistribution of the dispersed particle concentration in the light field. The theoretical analysis of the light induced mass transport task was executed in the dispersed medium in a homogeneous light field. As a result of the analytical solution of the light induced mass transport task it was obtained an expression for the deflection angle of the beam in a pseudo-prism. The results are relevant in the study of the dispersed liquid media, as well as optical diagnostics of such materials.
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