Electron Emission Suppression from Cathode Surfaces of a Rod-Pinch Diode

The theory and method of suppressing electron emission from cathode surfaces is introduced, including increasing the emission threshold, reducing the surface electric field and shielding the emitted electrons. The stainless steel-graphite and Teflon-graphite composite cathodes are designed to test t...

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Published inChinese physics letters Vol. 27; no. 5; pp. 160 - 163
Main Author 高屹 尹佳辉 孙剑锋 张众 张鹏飞 苏兆锋
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2010
Subjects
Cathodes
Diodes
Electric potential
Electron emission
Emissions control
Emittance
Retarding
Voltage
不锈钢
复合阴极
感应电压
抑制电子发射
箍缩二极管
聚四氟乙烯
表面电场
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/27/5/055201

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Abstract The theory and method of suppressing electron emission from cathode surfaces is introduced, including increasing the emission threshold, reducing the surface electric field and shielding the emitted electrons. The stainless steel-graphite and Teflon-graphite composite cathodes are designed to test the above methods for a rod-pinch diode. The experiments are performed on the inductive voltage adder, and the results indicate that the Teflon-graphite composite cathode is effective in suppressing electron emission from the specified cathode surface, while the stainless steel-graphite composite cathode fails. The reasons are analyzed theoretically.
AbstractList The theory and method of suppressing electron emission from cathode surfaces is introduced, including increasing the emission threshold, reducing the surface electric field and shielding the emitted electrons. The stainless steel-graphite and Teflon-graphite composite cathodes are designed to test the above methods for a rod-pinch diode. The experiments are performed on the inductive voltage adder, and the results indicate that the Teflon-graphite composite cathode is effective in suppressing electron emission from the specified cathode surface, while the stainless steel-graphite composite cathode fails. The reasons are analyzed theoretically.
Author 高屹 尹佳辉 孙剑锋 张众 张鹏飞 苏兆锋
AuthorAffiliation Department of Engineering Physics, Tsinghua University, Beijing 100084 Northwest Institute of Nuclear Technology, Xi＇an 710024
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SubjectTerms Cathodes
Diodes
Electric potential
Electron emission
Emissions control
Emittance
Retarding
Voltage
不锈钢
复合阴极
感应电压
抑制电子发射
箍缩二极管
聚四氟乙烯
表面电场
Title Electron Emission Suppression from Cathode Surfaces of a Rod-Pinch Diode
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