Electrical field arising during ejection explosionстатья
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Дата последнего поиска статьи во внешних источниках: 16 декабря 2020 г.
Аннотация:The analysis performed herein shows that the electric field (EF) in the near-ground atmospheric layer, which appears during the explosions of explosive charges in soil, is related to the motion of the electrically charged ejection cupola and of the dust-gas cloud. The calculation of the vertical electric field variation, taking into account the mechanisms of soil motion and settling of the charged dust-gas cloud on the ground, agrees with experimental data. The investigation showed that the effects of shock polarization of the medium, and the perturbations of Earth's electromagnetic field by the seismic waves lead to much smaller EF values during the explosion. The electric charge of the soil may reach values which are obtained in tests due to the processes of breakdown and friction of the soil particles, however, its dependence on the mass of the explosive differs from the empirical one. A physical mechanism is proposed for the separation of electric charges during the filtration of the explosion products into the medium, which is broken down by the explosion. This mechanism takes into account the relaxation process in the plasma and allows to explain the experimental relation between the electric charge of the ejection cupola and the mass of the explosive.