Investigation of the gridless ion sources operating parameters
Authors: Manegin D.S., Sokolov V.D., Shilov S.O., Vorobiev E.V., Serushkin S.V., Ivakhnenko S.G.
Published in issue: #12(144)/2023
DOI: 10.18698/2308-6033-2023-12-2322
Category: Mechanics | Chapter: Mechanics of Liquid, Gas, and Plasma
The influence of the working gas flow rate and magnetic field induction on the stability of operation and discharge characteristics of low-energy gridless ion sources with a divergent ion beam has been studied. Three size models of the ion sources with rated discharge currents of 5 A, 10 A and 15 A have been tested. Magnetic systems of the sources were based on permanent magnets. The number of magnets varied to obtain different values of magnetic field induction. Configurations with a reflector under the floating potential and under the anode potential were worked out for each size. Volt-ampere characteristics of the gridless ion sources for different values of the working gas flow rate and magnetic field induction in the gas discharge chamber were obtained. The operating ranges of gas flow rates are determined; the optimal values of magnetic field induction for each of the combinations of the size and the potential of the reflector are selected.
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