Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes

XIA Lian-Sheng; YANG An-Min; CHEN Yi; ZHANG Huang; LIU Xing-Guang; LI Jin; JIANG Xiao-Guo; ZHANG Kai-Zhi; SHI Jin-Shui; DENG Jian-Jun; ZHANG Lin-Wen

doi:10.1088/1674-1137/34/11/013

Chinese Physics C> 2010, Vol. 34> Issue(11) : 1733-1737 DOI: 10.1088/1674-1137/34/11/013

Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes

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Abstract：
The experimental results of studies of four kinds of cathode emitting intense electron beams are demonstrated under multi-pulsed mode based on an experimental setup including two multi-pulse high voltage sources. The tested cathodes include velvet, carbon fibers, carbon nano-tubes (CNTs) and dispenser cathodes. The results indicate that all four are able to emit multi-pulsed beams. For velvet, carbon fiber and CNTs, the electron induced cathode plasma emission may be the main process and this means that there are differences in beam parameters from pulse to pulse. For dispenser cathodes tested in the experiment, although there is a little difference from pulse to pulse for some reason, thermal-electric field emission may be the main process.

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XIA Lian-Sheng, YANG An-Min, CHEN Yi, ZHANG Huang, LIU Xing-Guang, LI Jin, JIANG Xiao-Guo, ZHANG Kai-Zhi, SHI Jin-Shui, DENG Jian-Jun and ZHANG Lin-Wen. Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes[J]. Chinese Physics C, 2010, 34(11): 1733-1737. doi: 10.1088/1674-1137/34/11/013

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Received: 2009-12-23
Revised: 2010-03-27

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes

Corresponding author: XIA Lian-Sheng,

Received Date: 2009-12-23

Accepted Date: 2010-03-27

Available Online: 2010-11-05

Abstract:

The experimental results of studies of four kinds of cathode emitting intense electron beams are demonstrated under multi-pulsed mode based on an experimental setup including two multi-pulse high voltage sources. The tested cathodes include velvet, carbon fibers, carbon nano-tubes (CNTs) and dispenser cathodes. The results indicate that all four are able to emit multi-pulsed beams. For velvet, carbon fiber and CNTs, the electron induced cathode plasma emission may be the main process and this means that there are differences in beam parameters from pulse to pulse. For dispenser cathodes tested in the experiment, although there is a little difference from pulse to pulse for some reason, thermal-electric field emission may be the main process.

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Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes

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通讯作者: 陈斌, bchen63@163.com

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