On the plasma mechanism of developing the early stages of breakdown in gases |
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Authors: | O A Omarov A A Rukhadze |
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Institution: | 1.Dagestan State University,Makhachkala,Dagestan, Russia;2.Prokhorov General Physics Institute,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | The time evolution of the initial stages of breakdown in high-pressure gases is theoretically investigated. The following
three stages are considered: initial: the origination and development of an ionization avalanche, the change of this avalanche
to a plasma avalanche, and the change of the plasma avalanche to a plasma streamer. The streamer ionizes the gas via its radiation,
causes new avalanches propagating in an enhanced discharge field, and bridges the discharge gap. Simple formulas are derived
for the times of transition between various breakdown stages and for the ionization front velocity at separate stages. |
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