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- Title
Experimental study of the influence of the processes in the ion-beam drift space on beam current measurements.
- Authors
Gavrilov, N.V.; Kamenetskikh, A.S.
- Abstract
A method is proposed for separate measurements of the current produced by slow charge-exchange ions and that produced by the ions generated due to gas ionization by the beam ions and fast secondary electrons in the beam drift space. The method is based on an analysis of the current distribution over the electrodes of a modified Faraday cup with nonequipotential electrodes and allows one to determine the coefficient of ion-induced electron emission from the ion collector and the charge-exchange cross section of the accelerated ions. The method has been employed to measure the current of an argon ion beam with an ion energy from a few electronvolts to several tens of kiloelectronvolts and to study the processes in the beam drift space at pressures of 0.03–0.15 Pa.
- Subjects
ION bombardment; ELECTRIC charge; ELECTRIC currents; IONIZATION of gases; SECONDARY electron emission; ELECTRODES
- Publication
Technical Physics, 2006, Vol 51, Issue 6, p708
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S1063784206060053