Formation and Mechanism of Stable Point Ion/Electron Sources
碩士 === 國立臺灣大學 === 物理學研究所 === 89 === A very stable dual ion/electron point source has been successfully fabricated based on a Au-In alloy liquid metal ion source. Field electron microscopy is employed to examine the pattern of electron emission from the Au-In tip, which has been solidified...
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| Format: | Others |
| Language: | en_US |
| Published: |
2001
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| Online Access: | http://ndltd.ncl.edu.tw/handle/07605091152695716546 |
| Summary: | 碩士 === 國立臺灣大學 === 物理學研究所 === 89 === A very stable dual ion/electron point source has been successfully fabricated based on a Au-In alloy liquid metal ion source. Field electron microscopy is employed to examine the pattern of electron emission from the Au-In tip, which has been solidified during an ion emission condition.
Emission properties and formation of a single cone electron source on the solidified Au-In source are studied. Compared to the In dual ion/electron source prepared under similar conditions, the Au-In source exhibits much enhanced stability and maintains a single point electron emitter to a much higher emission current. With its stable ion and electron emission as well as good electron emission brightness (~2 x 108 A/sr‧cm2), the Au-In dual ion/electron source is a potential candidate for a single column focused ion/electron beam system.
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