Effect of ion leakages on the electron magnetic self-insulation in a vacuum coaxial line

It is experimentally and theoretically shown that ion leakage currents lead to a small increase of electron magnetic self-insulation in a vacuum coaxial line. The recorded ion current excess over the value obtained on the basis of the three-harves-power law, is explained by widening of near-electrode plasma layers and the presence of an electron layer in the coaxial clearance. Connections of the line segments with different impedances are investigated and the conditions of energy transmission in the vacuum coaxial line are elucidated. For this case the line impedance increase with its removal form the generator ensures the lack of leakages in the impedance variation range. When impedance decreases near the segment interface the leakage current equal to the difference in the minimum segment currents, is dropped. The experimental distribution of the electron leakage currents are in good agreement with the simple model proposed