Title :
Electron extraction from the electrostatically confined discharge source
Author_Institution :
Dept. of Accel. & Ion Sources, Atomic Energy Authority, Cairo, Egypt
Abstract :
Electron beam current has been extracted from the electrostatically confined discharge source by applying a potential greater than the plasma potential on the focusing electrode and the Faraday cup. The effect of a convergent magnetic field, focusing electrical voltage and pressure on the extracted electron beam current have been taken into consideration. An electron current of the order of 195 μA corresponding to a density of 6.2 mA/cm2 has been extracted at a pressure of 2×10-4 torr, and 3 kV focusing voltage with an axial magnetic field of the order of 500 Gauss
Keywords :
electron sources; electrostatic devices; electrostatic discharge; ion sources; 195 muA; 2E-4 torr; 3 kV; 500 gauss; Faraday cup; convergent magnetic field; density; electron beam current; electron current; electron extraction; electrostatically confined discharge source; focusing electrical voltage; focusing electrode; plasma potential; potential; pressure; Electrodes; Electron beams; Fault location; Gaussian processes; Magnetic confinement; Magnetic fields; Plasma confinement; Plasma density; Plasma sources; Voltage;
Conference_Titel :
Radio Science Conference, 1999. NRSC '99. Proceedings of the Sixteenth National
Conference_Location :
Cairo
Print_ISBN :
977-5031-62-1
DOI :
10.1109/NRSC.1999.760947
