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Thin-film emitter based on a tungsten-DLC multilayer
Japanese Journal of Applied Physics ( IF 1.5 ) Pub Date : 2020-10-13 , DOI: 10.35848/1347-4065/abbc79
Kyuseok Kim 1 , Dong-Goo Kang 1 , Tae Hwan Jang 2 , Tae Gyu Kim 3 , Jaegu Choi 1
Affiliation  

Nanostructure emitters are an alternative low-power approach to generate electrons and provide control of the electron energy, digital control, and a small device size compared to that of conventional thermal emitters. Carbon nanotubes (CNTs) have been intensively investigated and reported to have excellent properties due to their high aspect ratio, high thermal conductivity, and chemical inertness. However, manufactured CNTs have uniformity issues, and this leads to problems with the characterization of X-ray tubes, including their current and lifetime. In this study, we propose a new cold cathode emitter based on a tungsten and diamond-like carbon multilayer with a sapphire supported plate to ensure durability and a homogeneous manufactured structure. We conducted the deposition of the emitter components at the nanoscale by using a homemade high vacuum system to demonstrate its viability for X-ray sources. A numerical simulation was also conducted to demonstrate its viability....

中文翻译:

基于钨-DLC多层薄膜发射器

与传统的热辐射器相比,纳米结构的辐射器是一种替代性的低功率方法,可以产生电子并提供电子能量的控制,数字控制和较小的器件尺寸。碳纳米管(CNT)由于其高的长宽比,高的热导率和化学惰性而被广泛研究并报道具有优异的性能。然而,制造的CNT具有均匀性问题,并且这导致了X射线管的表征问题,包括其电流和寿命。在这项研究中,我们提出了一种新的冷阴极发射器,该发射器基于钨和类金刚石碳多层结构,并带有蓝宝石支撑板,以确保耐用性和均匀的制造结构。我们使用自制的高真空系统在纳米级进行了发射体成分的沉积,以证明其对X射线源的可行性。还进行了数值模拟,以证明其可行性。
更新日期:2020-10-15
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