Simulation of a plasma antenna by PIC method

17th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Bogachev, N.N.^1,2

Moscow State University of Information Technologies, Radio Engineering and Electronics, Moscow, Russia^1

A M Prokhorov General Physics Institute, Russian Academy of Science, Moscow, Russia^2

关键词: Carrier frequency;    Dielectric tubes;    Discharge plasma;    Electromagnetic field components;    Langmuir frequencies;    Particle in cell method;    Plasma frequencies;    Spectral components;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/661/1/012054/pdf
DOI  :  10.1088/1742-6596/661/1/012054

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The numerical model of a plasma asymmetric dipole antenna is studied in this paper. This antenna consists of a dielectric tube with discharge plasma and a metal screen. The plasma in the tube is simulated by Particle-in-cell (PIC) method. The spectra of the electromagnetic field components were studied in the plasma and the near antenna field for various antenna operating modes. The operating modes depend on a ratio of a plasma frequency and a frequency of radiated electromagnetic wave. Langmuir frequency component was found in spectra within plasma for all antenna operating modes. The amplitude of this spectral component is greater than the amplitude of the component at the carrier frequency for nonradiative and non-linear modes. The biggest amplitude of the radiated signal spectrum is at the carrier frequency in the linear mode.