CUED Publications database

A truncated-cone carbon nanotube cold-cathode electron gun

Yuan, X and Zhang, Y and Cole, MT and Yan, Y and Li, X and Parmee, R and Wu, J and Xu, N and Milne, WI and Deng, S (2017) A truncated-cone carbon nanotube cold-cathode electron gun. Carbon, 120. pp. 374-379. ISSN 0008-6223

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A concurrently high beam current and high current density carbon nanotube (CNT) cold cathode electron gun is herein developed. A radial electron source has been realized, formed from CNTs synthesized directly on the side walls of a stainless steel truncated-cone electron gun. Experimental results evidenced a 35 kV/50 mA electron beam can achieve a beam transparency of nearly 100% through the use of double anodes and crossed electric and magnetic fields. A maximum beam current density of 3.5 A/cm was achieved. These results demonstrate the potential impact of coupling novel cold cathode gun architectures and emerging nanomaterials and their collective role in augmenting the performance of incumbent electron gun technologies, alongside allowing for the realization new types of field emission vacuum electron radiation sources. 2

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 01 Nov 2017 20:05
Last Modified: 13 Apr 2021 07:08
DOI: 10.1016/j.carbon.2017.03.046