Title :
Ion acceleration in vacuum arc cathode plasma jet with large rate of arc current rise
Author_Institution :
Electrical Discharge and Plasma Laboratory, Department of Interdisciplinary Studies, Fleischman Faculty of Engineering Tel Aviv University, P. O. B. 39040, Tel Aviv 69978, Israel
fDate :
Sept. 27 2004-Oct. 1 2004
Abstract :
A model of plasma acceleration in a high-current short pulse vacuum arc is developed. The mathematical description includes equations for the cathode spot and the plasma jet and it was solved for rate of current rise dI/dt in the range of 0.1 -10 GMs. It was shown that the plasma could be accelerated to the measured energy due to a gasdynamic mechanism. The cathode erosion rate determines the ion energy which depends on the ratio of the ion flu to the electron flu. The calculated cathode erosion rate varies from 200 to 10 μg/C when the ion energy increases from 0.1 to 10 keV.
Keywords :
Acceleration; Cathodes; Electron emission; Energy measurement; Equations; Influenza; Kinetic theory; Plasma accelerators; Plasma measurements; Vacuum arcs;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV. XXIst International Symposium on
Conference_Location :
Yalta, Crimea
Print_ISBN :
0-7803-8461-X
DOI :
10.1109/DEIV.2004.1418633
