Title :
A Gridded High-Compression-Ratio Carbon Nanotube Cold Cathode Electron Gun
Author :
Xuesong Yuan ; Yu Zhang ; Huan Yang ; Xiaoyun Li ; Ningsheng Xu ; Shaozhi Deng ; Yang Yan
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In order to develop field emission cold cathode radiation source devices, a gridded carbon nanotube (CNT) cold cathode electron gun is theoretically and experimentally investigated in this letter. The planar grid and annular CNT cold cathode are used and optimal parameters of a high-compression-ratio electron gun are obtained by particle in cell simulation software. A 4-mA/10-kV annular electron beam with an average radius of 1.75 mm is achieved based on a permanent magnet in the experiment. The area compression ratio of electron beam is ~10.
Keywords :
carbon nanotubes; cathodes; electrochemical electrodes; electron beams; electron field emission; electron guns; permanent magnets; C; annular electron beam; current 4 mA; field emission cold cathode radiation source device; gridded high-compression-ratio carbon nanotube cold cathode electron gun; particle in cell simulation software; permanent magnet; planar grid annular CNT cold cathode; size 1.75 mm; voltage 10 kV; Anodes; Carbon nanotubes; Cathodes; Current density; Electron beams; Electron tubes; Carbon nanotube; carbon nanotube; cold cathode; electron gun;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2015.2401593
