High emission current density electron gun for a 263 GHz sheet beam traveling wave tube

2017 ◽  
Author(s):  
Yuan Zheng ◽  
Diana Gamzina ◽  
N. C. Luhmann ◽  
Mariano Moran
Keyword(s):  
Current Density ◽  
Traveling Wave ◽  
Emission Current Density ◽  
Electron Gun ◽  
Emission Current ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
High Emission

High emission current density, vertically aligned carbon nanotube mesh, field emitter array

2010 ◽  
Vol 97 (11) ◽  
pp. 113107 ◽  
Author(s):  
Chi Li ◽  
Yan Zhang ◽  
Mark Mann ◽  
David Hasko ◽  
Wei Lei ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Field Emitter ◽  
High Emission ◽  
Vertically Aligned ◽  
Emitter Array ◽  
Field Emitter Array

Thermal analysis and structural optimization of electron gun for traveling wave tube

2011 ◽  
Vol 23 (12) ◽  
pp. 3421-3425 ◽  
Author(s):  
刘磊 Liu Lei ◽  
阮久福 Ruan Jiufu ◽  
杨军 Yang Jun ◽  
吕国强 Lü Guoqiang ◽  
邓光晟 Deng Guangsheng ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Structural Optimization ◽  
Traveling Wave ◽  
Electron Gun ◽  
Traveling Wave Tube ◽  
Wave Tube

100 A/cm2 high emission current density oxide cathode

IVESC 2012 ◽  
2012 ◽  
Author(s):  
Xiaoxia Wang ◽  
Min Zhang ◽  
Xianheng Liao ◽  
JirRun Luo ◽  
Qinglan Zhao ◽  
...  
Keyword(s):  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Oxide Cathode ◽  
High Emission

Automatic Data Acquisition and Analysis System of Electron Beam Distribution Based on LabVIEW Code

2014 ◽  
Vol 644-650 ◽  
pp. 2463-2466
Author(s):  
Hong Li Shen ◽  
Xian Xia Li ◽  
Ming Guang Huang ◽  
Jun He
Keyword(s):  
Electron Beam ◽  
Data Acquisition ◽  
Traveling Wave ◽  
Processing System ◽  
Electron Gun ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
Automatic Data ◽  
Analysis System ◽  
Automatic Data Acquisition

Automatic data acquisition and analysis system is set up aiming at measuring and analyzing the electron beams distribution from electron gun and traveling wave tube. It can obtain electron beam parameters, such as three-dimension current density distribution, beam center, beam waist and total current etc. and it can be applied to space technology ranging from centimeter wave to millimeter wave. LabVIEW program is used to acquire data from the hardware equipment and deduce results from post-processing system. As a result, this study is significant to improve the design of electron gun and traveling wave tube in space application.

Field Emission from ZnO by Morphological and Electronic Design

2007 ◽  
Vol 121-123 ◽  
pp. 813-816
Author(s):  
C.X. Xu ◽  
X.W. Sun ◽  
Z.L. Dong ◽  
G.P. Zhu ◽  
Y.P. Cui
Keyword(s):  
Fermi Level ◽  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
High Emission ◽  
Low Threshold ◽  
Electronic Design

In this paper, field emission from ZnO was studied by morphological and electronic design. By fabricating ZnO into nanopin structure with sharp tip, we can obtain low threshold and high emission current density. By doping ZnO with gallium, we can lift up the Fermi level and increase the conductivity to enhance the field emission. The fabrication of nanostructures and analysis of field emission will be discussed.

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