Loss Definition of Charged Particles in the Discharge Gap of the Opening of the Box-Screens during the formation of a Highly Conductive Channel

Abstract

The subject of this research is determination of the loss of charged particles in the pre-ionized air medium of the openings of the screen housings of radio-electronic means (REM) and waveguide antenna inputs depending on the parameters of electromagnetic radiation (EMR). The aim of research is establishment of the dependence of the diffusion coefficients, sticking, electron temperature and recombination on the parameters of the electromagnetic radiation, which determine the loss of electrons during the formation of a highly conductive channel in the discharge gap. The need to determine the loss of charged particles when solving the problem of protecting the REM from the effects of powerful electromagnetic radiation based on the use of nature-friendly (plasma) technologies is due to the need to determine the time of formation of the high-conductive channel and the strength of the electromagnetic radiation at which the breakdown in the discharge gap will be carried out. The article solves the following tasks: analysis of known scientific results in the field of development and research of the interaction of ionized air with EMR; determination of the influence of the working signal on the diffusion and mobility of ions; determination of the influence of high-frequency (HF) and microwave (MW) electric field on diffusion, mobility, electron temperature of charged particles of a weakly ionized air medium in an orifice (antenna waveguide) to obtain an analytical expression for estimating the concentration of charged particles within the scattering angle  taking into account the effect on the state of the electronic subsystem powerful EMR; determination of the EMR effect on the recombination of charged particles during the formation of a highly conductive electron channel.The following results were obtained: It was found in the article that a powerful EMR has a significant effect on the diffusion and mobility of charged particles and, accordingly, on the formation of a highly conductive channel for shorting EMR in radioelectronic equipment protection devices (REPD), an expression for estimating the concentration of ions within an angle, which takes into account the loss of charged particles due to the processes of diffusion and mobility; The effect of recombination of charged particles at different values of atmospheric pressure and air temperature on the initial electron concentration in the discharge gap is determined, which, in turn, leads to an increase in the time of formation of a highly conductive channel and requires a higher amount of EMR energy, which may exceed the maximum allowable level. Conclusion shows that: the losses of charged particles in the pre-ionized air medium of the holes of the box-screens of radio-electronic means and waveguide antenna inputs are determined depending on the parameters of electromagnetic radiation.

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