Effect of Electron Emission from Electrode on Gaseous Discharge

在一般情况下，气体放电现象是很少重现，由于麻烦的因素影响的现象。电极表面状况是影响电子发射的主要因素之一。因此，我们研究了阴极电子发射对气体放电现象的影响。首先，利用微通道等离子体（MCP）技术，研制了阴极电子发射测量装置。进行了真实的实验。项目摘要如下。1.电极材料为铜（Cu）、铝（Al）和铁（Fe），我们测量了阴极的电子发射。结果表明，电子发射在10^<-19>-10 ^<-13>（A）范围内。2.氧化电极的电子发射也在10^<-19>-10 ^<-13>（A）区。3.测量了氧化态铜电极的初始直流击穿电压。4.由于不可避免的微小突起，阴极的电子发射取决于表面粗糙度。如上所述，在10^-10 ^（A）范围内测量了阴极的电子发射<-19><-13>，发现阴极的电子发射与表面不可避免的微小突起有关。

In general, gaseous discharge phonomena are rarely reproducible due to troublesome factors affecting the phenomena. As one of the major factors, the condition of the electrode surface affecting electron emission has been considrered. Therefore we studied the eddect of the electron emission from cathode on gaseous discharge phenomena. Firstyl, uisng the Micro-Channel plare (MCP), we developed the apparatus which measure the electron emission from cathode. The real experiment were executed. Abstract of project is shown as follows. 1. The electrode materials were used Copper (Cu), Aluminum (Al) and iron (Fe), we measured the electron emission from cathode. At the results, the electron emission obtained in the 10^<-19>-10^<-13> (A) domain. 2. The electron emission from oxidized electrode also obtained in the 10^<-19>-10^<-13> (A) domain. 3. The initial dc breakdown voltage were measured about oxidized Cu electode. 4. The electron emission from cathode depended on the surface roughness due to unavoidable minute projections. As above mentined, the electron emission are mesured at the region of 10^<-19>-10^<-13> (A) And it is found that thre electron emission from cathode is related to the unavoidable minute projections on the surface.