%0 Journal Article
%T Research on intense pulsed emission of carbon nanotube cathode<br>碳纳米管阴极的强流脉冲发射性能研究
%A Liao Qing-Liang
%A Zhang Yue
%A Xia Lian-Sheng
%A Huang Yun-Hu
%A Qi Jun-Jie
%A Gao Zhan-Jun
%A Zhang Huang
%A <br>廖庆亮
%A 张 跃
%A 夏连胜
%A 黄运华
%A 齐俊杰
%A 高战军
%A 张 篁
%J 物理学报
%D 2007
%I 
%X Two different carbon nanotube (CNT) cathodes have been made by using screen-printing and also by coating. Pulse emission properties of the two cathodes were studied, and the cathode's surface morphology was characterized. Research results show that the CNT cathode is capable of generating pulsed beams of a few kilo-amperes. The pulsed field emission properties of the cathode were tested in a diode structure powered by a high-voltage generator(under conditions of 2×10-3 Pa, 100ns, 1.64MV). The results reveal that the emission current of the cathode made by coating can attain 5.11 kA, and the highest emission current density is 260 A/cm2. The stability of cathode made by screen-printing is better than that made by coating. The pulsed emission mechanism of carbon nanotubes is shown to be explosive electron emission. This carbon nanotube cathode appears to be suitable for high-power microwave device applications.
%K carbon nanotubes
%K cathode
%K pulse emission
%K intense current<br>碳纳米管
%K 阴极
%K 脉冲发射
%K 强电流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=46217B2AFD7D7749&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=9CF7A0430CBB2DFD&sid=E012DA5851656925&eid=303A20ED8E827892&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=24