2018•Unpublished venueRequires access

CNT field emitter based high performance x-ray source

Sang Heon Lee, Jun Soo Han, Ju Hyun Jeon, Han Bin Go, Cheol Jin Lee, Yoon‐Ho Song

Abstract

We fabricated the cold cathode x-ray source composed of point-type CNT field emitter, mesh gate electrode, e-beam focusing lens and W anode. The point-type CNT field emitter was made by CNT film with a triangular tip shape. Field emission properties measured in triode configuration showed the low turn-on and threshold electric fields, the high emission current and focused electron beam spot. The CNT field emitter based cold cathode x-ray source reveals high resolution x-ray images. We demonstrated that the point-type CNT emitter is suitable candidate for the high performance cold cathode x-ray sources.

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Available abstract

Key concepts: Common emitter, Triode, Field electron emission, Cathode, Anode, Cold cathode, Materials science, Cathode ray