{"title":"Density-gradient analysis of effects of geometry on field-emitter characteristics","authors":"M. Ancona","doi":"10.1109/IEDM.1992.307383","DOIUrl":null,"url":null,"abstract":"An approximate approach to quantum transport problems known as density-gradient theory is used to study geometrical and space-charge effects on field emission in planar, cylindrical and spherical geometries. It is shown that significant departures from simple field enhancement ( beta factor) arise for radii of curvature below 50AA and that for many purposes explicit inclusion of space-charge effects is unnecessary especially in non-planar geometries.<<ETX>>","PeriodicalId":287098,"journal":{"name":"1992 International Technical Digest on Electron Devices Meeting","volume":"190 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1992 International Technical Digest on Electron Devices Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEDM.1992.307383","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
An approximate approach to quantum transport problems known as density-gradient theory is used to study geometrical and space-charge effects on field emission in planar, cylindrical and spherical geometries. It is shown that significant departures from simple field enhancement ( beta factor) arise for radii of curvature below 50AA and that for many purposes explicit inclusion of space-charge effects is unnecessary especially in non-planar geometries.<>
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