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Ferroelectric emission ：hodes for 1 OW lCcathod Ior low-power electric propulsion(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2008年02期
Page:
37-40
Research Field:
研究与设计
Publishing date:

Info

Title:
Ferroelectric emission ：hodes for 1 OW lCcathod Ior low-power electric propulsion
Author(s):
Sheng Zhaoxuanl; Feng Yujun2; Xu Zhuo2; Sun Xinlil
1 Teaching and Researching Laboratory 103 of the Second Artillery Engineering Institute，Xi7an，7 10025； 2 Electronic Materials Research Laboratory，Xi'an Jiaotong University，Xi'an，710049
Keywords:
electric propulsion; neutralizer; ferroelectrie cathode; electron emission
PACS:
V439
DOI:
-
Abstract:
Low—or no—flow electron emitters required for low power electric thrusters have been analyzed．Feasibility of ferroelectric cathode used for neutralizer is proposed．The PLZT used in experiment is 0．5mm thick．Electron emission property of PLZT under low voltage(1．0～1．2kV)has been studied．Ferroelectric cathodes are driven by unipolar positive pulse l lxs in duration． Emis— sion current 320ns～3000ns in duration with peak current up to 34A has been acquired．Reliable e— mission has been achieved in air background at pressures as high as 10-4 Torr．

References:

[1]张郁．电推进技术的研究应用现状及其发展趋势[J]．火 箭推进，2005，31(2)：27—35．
[2]杨乐，李自然，尹乐，等．脉冲等离子体推力器研究综 述[J]．火箭推进，2006，32(2)：32-36．
[3]牛禄，王宏伟，杨威，等．用于微小卫星推进装置的脉冲 等离子体推力器[J]．上海航天，2004，(5)：39--42．
[4]Rosenman G，Shur D，Garb K et a1．Polarization Switching in Ferroelectric Cathodes[J]．J Appl．Phys．1997，82(7)： 772-778．
[5]Puchkarev V F，Mesyats G A．On the Mechanism of Emission from the Ferroelectric Ceramic Cathode[J]．J AppL Phys．1 995，78(1 1)：5633-5637．
[6]Dunaevsky A，Krasik Y E，Felsteiner J，et a1．Electron／Ion Emission from the Plasma Formed on the Surface of Ferroelectrics I．Studies of Plasma Parameters without Applying an Extracting Voltage[J]．J Appl．Phys．1999，85 (6)：8464-8473．
[7]Rosenman G，Shur D'Krasik Y E'et aL Electron Mmission from Ferroelectrics[J]．J．Appl．Phys．2000．88(12)：6109- 6161．

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Last Update: 1900-01-01