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

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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
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 shu
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Received: 2009-12-23
Revised: 2010-03-27
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Multi-pulsed intense electron beam emission from velvet, carbon fibers, carbon nano-tubes and dispenser cathodes

    Corresponding author: XIA Lian-Sheng,

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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