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The electromagnetic field generated by capillary drops oscillations
- Institute of Applied Physics RAS, Russia
The exact solution for the full electromagnetic field generated by
capillary oscillations of a drop of an ideal conducting liquid
electrically charged and subsninuted to external homogeneous constant
electric field was found in this report. The calculation of absolute
spectra of electromagnetic radiation and quasistatic electric field
generated by a cloud of drops stochastic oscillating at typical clod
volume and drop density and size distribution was fulfilled. The intensity
of these fields turn to be much less than the background. Examined the
situation of the common-mode excitation of oscillations in an ensemble of
cloud drops, which can take place in the storm clouds, after lightening
discharges. In this case, the amplitude spectral density of the
quasi-static electric field generated by drops oscillations in a typical
thunderstorm cloud at a distance of tens of kilometers from it is
comparable with the typical level of the spectrum of the electric field
near storm clouds. Probably, the common-mode excitation of drops can occur
in the clouds above the centers of seismic activity in moments of sudden
changes of atmospheric fields.