The ionization processes and striking of discharge in acceleration gap of sources of electrons with the plasma big cross section emitter

Numerical simulation has shown, that processes of ionization and mobility of a surface of emitting plasma render essential influence on change of electron-optical properties of acceleration gap. It results to that In electron-optical systems with the plasma the big cross section emitter the initial plasma surface formed by a field of accelerating electrode, can make chaotic movements as in the direction of the discharge camera so in the direction of accelerating electrode. It increases concentration of emitting plasma due to absorption of ions and can be by a condition of electrical break-down of acceleration gap