{"title":"Recent Studies of the Chemical and Physical Processes in Thermionic Cathodes","authors":"M.C. Green, R. A. Tuck","doi":"10.1109/EUMA.1978.332624","DOIUrl":null,"url":null,"abstract":"The reason for the reduced effective work function of osmium coated dispenser cathodes has been investigated using emission microscopy, scanning electron microscopy, electron microprobe analysis and X-ray photo electron spectroscopy. The results indicate that the presence of osmium increases the thickness of the emitting layer and that this layer contains osmium which is chemically combined with the barium to form oxy-anion compounds. On partially coated cathodes an area of enhanced emission was observed at the tungsten/osmium interface.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1978 8th European Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMA.1978.332624","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The reason for the reduced effective work function of osmium coated dispenser cathodes has been investigated using emission microscopy, scanning electron microscopy, electron microprobe analysis and X-ray photo electron spectroscopy. The results indicate that the presence of osmium increases the thickness of the emitting layer and that this layer contains osmium which is chemically combined with the barium to form oxy-anion compounds. On partially coated cathodes an area of enhanced emission was observed at the tungsten/osmium interface.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
