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Title: Explosive field emission and plasma expansion of carbon nanotube cathodes

Abstract

High intensity electron emission cathodes based on carbon nanotube films have been successfully fabricated. An investigation of the explosive field emission properties of the carbon nanotube cathode in a double-pulse mode was presented and a high emission current density of 309 A/cm{sup 2} was obtained. The time-and-space resolution of the electron-beam flow from the cathode was investigated. The formation of the cathode plasma layer was proven and the plasma expanded at a velocity of {approx}7.8 cm/{mu}s toward the anode. The formation of cathode plasma has no preferential position and the local enhancement of electron beams is random.

Authors:
; ; ; ; ; ;  [1];  [2]
  1. State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083 (China)
  2. (China)
Publication Date:
OSTI Identifier:
20960205
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 15; Other Information: DOI: 10.1063/1.2722227; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; ANODES; CARBON; CATHODES; CURRENT DENSITY; ELECTRON BEAMS; ELECTRON EMISSION; ELECTRONS; FIELD EMISSION; LAYERS; NANOTUBES; PLASMA; PLASMA EXPANSION; PULSES; RANDOMNESS; THIN FILMS

Citation Formats

Liao Qingliang, Zhang Yue, Huang Yunhua, Qi Junjie, Gao Zhanjun, Xia Liansheng, Zhang Huang, and Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900. Explosive field emission and plasma expansion of carbon nanotube cathodes. United States: N. p., 2007. Web. doi:10.1063/1.2722227.
Liao Qingliang, Zhang Yue, Huang Yunhua, Qi Junjie, Gao Zhanjun, Xia Liansheng, Zhang Huang, & Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900. Explosive field emission and plasma expansion of carbon nanotube cathodes. United States. doi:10.1063/1.2722227.
Liao Qingliang, Zhang Yue, Huang Yunhua, Qi Junjie, Gao Zhanjun, Xia Liansheng, Zhang Huang, and Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900. Mon . "Explosive field emission and plasma expansion of carbon nanotube cathodes". United States. doi:10.1063/1.2722227.
@article{osti_20960205,
title = {Explosive field emission and plasma expansion of carbon nanotube cathodes},
author = {Liao Qingliang and Zhang Yue and Huang Yunhua and Qi Junjie and Gao Zhanjun and Xia Liansheng and Zhang Huang and Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900},
abstractNote = {High intensity electron emission cathodes based on carbon nanotube films have been successfully fabricated. An investigation of the explosive field emission properties of the carbon nanotube cathode in a double-pulse mode was presented and a high emission current density of 309 A/cm{sup 2} was obtained. The time-and-space resolution of the electron-beam flow from the cathode was investigated. The formation of the cathode plasma layer was proven and the plasma expanded at a velocity of {approx}7.8 cm/{mu}s toward the anode. The formation of cathode plasma has no preferential position and the local enhancement of electron beams is random.},
doi = {10.1063/1.2722227},
journal = {Applied Physics Letters},
number = 15,
volume = 90,
place = {United States},
year = {Mon Apr 09 00:00:00 EDT 2007},
month = {Mon Apr 09 00:00:00 EDT 2007}
}