Study of scattering cross section of a plasma column using Green's function volume integral equation method

Abstract

In this article, the electromagnetic wave scattering from plasma columns with inhomogeneous electron density distribution is studied by the Green's function volume integral equation method. Due to the ready production of such plasmas in the laboratories and their practical application in various technological fields, this study tries to find the effects of plasma parameters such as the electron density, radius, and pressure on the scattering cross-section of a plasma column. Moreover, the incident wave frequency influence of the scattering pattern is demonstrated. Furthermore, the scattering cross-section of a plasma column with an inhomogeneous collision frequency profile is calculated and the effect of this inhomogeneity is discussed first in this article. These results are especially used to determine the appropriate conditions for radar cross-section reduction purposes. It is shown that the radar cross-section of a plasma column reduces more for a larger collision frequency, for a relatively lower plasma frequency, and also for a smaller radius. Furthermore, it is found that the effect of the electron density on the scattering cross-section is more obvious in comparison with the effect of other plasma parameters. Also, the plasma column with homogenous collision frequency can be used as a better shielding in contrast to its inhomogeneous counterpart.

Optimization of plasma parameters for effective attenuation of microwaves in specified frequency range

“…GFVIE method is being used for modeling EM wave scattering. [4,28] Due to the need for fewer computation cells in comparison with other modeling methods and the lack of the absorbing boundary condition, GFVIE method is an accurate and fast method for solving EM wave scattering problems in non-uniform plasma. While the widely used method of scattering matrix method (SMM) is used for layered structures with one-dimensional inhomogeneity, the GFVIE method can be applied in higher dimensions for different plasma shapes.…”

“…While the widely used method of scattering matrix method (SMM) is used for layered structures with one-dimensional inhomogeneity, the GFVIE method can be applied in higher dimensions for different plasma shapes. [28] The validity and capability of this method for the inhomogeneous plasma have been investigated by comparison of its results with the results calculated by the other methods. [4] After solving the problem of wave scattering, the attenuation band is optimized by CSA adjusting desired parameters.…”