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Conference Paper
A Novel Vacuum-sealed Field Emission X-ray Tube with Graphene-gated Carbon Nanotube Emitters
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- Authors
- Hyojin Jeon, Eunsol Go, Jeong-Woong Lee, Yujung Ahn, Sora Park, Jae-Woo Kim, Jun-Tae Kang, Jin Woo Jeong, Ki Nam Yun, Ji-Whan Yeon, Sunghee Kim, Yoon-Ho Song
- Issue Date
- 2018-07
- Citation
- International Vacuum Nanoelectronics Conference (IVNC) 2018, pp.1-2
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- Multilayer graphene-gated carbon nanotube (CNT) emitters are introduced to novel vacuum-sealed X-ray tubes. We characterized field emission performances and electron-beam (Ebeam) converging of the graphene-gated emitter in a vacuum chamber. Thermal durability of the graphene-gate was well achieved to apply it to X-ray tubes processed with brazing at a high temperature. A transmissive anode target with a Be window, ceramic insulators, and the graphene-gated CNT emitters were successfully brazed to a fully vacuum-sealed X-ray tube, maintaining an unique graphene-gated field emission performance.
- KSP Keywords
- Carbon nano-tube(CNT), Carbon nanotube emitters, Electron beam, Field emission performance, High Temperature, Vacuum chamber, fully vacuum-sealed, multilayer graphene(MLG), thermal durability, x-ray tube