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A Feasibility Study on the Cold Hollow Cathode Gas Ion Source for Multi-Aperture Focused Ion Beam System  

Choi, Sung-Chang (Nano & Surface Department SongDo TechnoPark)
Kang, In-Cheol (Nano & Surface Department SongDo TechnoPark)
Han, Jae-Kil (Nano & Surface Department SongDo TechnoPark)
Kim, Tae-Gon (Department of Mechanical Engineering, Yonsei Univ.)
Min, Byung-Kwon (Department of Mechanical Engineering, Yonsei Univ.)
Publication Information
Abstract
The cold hollow cathode gas ion source is under development for multi aperture focused ion beam (FIB) system. In this paper, we describe the cold hollow cathode ion source design and the general ion source performance using Ar gas. The glow discharge characteristics and the ion beam current density at various operation conditions are investigated. This ion source can generate maximum ion beam current density of approximately 120 mA/$cm^2$ at ion beam potential of 10 kV. In order to effectively transport the energetic ions generated from the ion source to the multi-aperture focused ion beam(FIB) system, the einzel lens system for ion beam focusing is designed and evaluated. The ions ejected from the ion source can be forced to move near parallel to the beam axis by adjusting the potentials of the einzel lenses.
Keywords
Ion Beam; Plasma; Gas Ion Source; Nano-Fabrication; Cold Hollow Cathode;
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Times Cited By KSCI : 1  (Citation Analysis)
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