Jinfeng Zhao, D. Gamzina, A. Baig, L. Barnett, Jian-xun Wang, N. Luhmann
{"title":"用于220 GHz 50W片束行波管放大器的散射阴极","authors":"Jinfeng Zhao, D. Gamzina, A. Baig, L. Barnett, Jian-xun Wang, N. Luhmann","doi":"10.1109/IRMMW-THZ.2011.6104761","DOIUrl":null,"url":null,"abstract":"Nanocomposite Sc2O3-added tungsten dispenser cathodes were tested in Cathode Life Test Vehicles (CLTV) with a Pierce gun configuration under CW mode. The emission performance for both dc and pulsed current density remained consistent. In CLTV #1, owing to perveance issue (there is 100 micron gap between focus electrode and cathode emission surface), 10 A/cm2 dc current density can be acquired at practical temperature of 1120°C Br for more than 2000 hours. In CLTV #2 with reduced FE gap, 45 A/cm2 dc current density is obtained.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"138 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Scandate dispenser cathode for 220 GHz 50W sheet beam travelling wave tube amplifier\",\"authors\":\"Jinfeng Zhao, D. Gamzina, A. Baig, L. Barnett, Jian-xun Wang, N. Luhmann\",\"doi\":\"10.1109/IRMMW-THZ.2011.6104761\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Nanocomposite Sc2O3-added tungsten dispenser cathodes were tested in Cathode Life Test Vehicles (CLTV) with a Pierce gun configuration under CW mode. The emission performance for both dc and pulsed current density remained consistent. In CLTV #1, owing to perveance issue (there is 100 micron gap between focus electrode and cathode emission surface), 10 A/cm2 dc current density can be acquired at practical temperature of 1120°C Br for more than 2000 hours. In CLTV #2 with reduced FE gap, 45 A/cm2 dc current density is obtained.\",\"PeriodicalId\":6353,\"journal\":{\"name\":\"2011 International Conference on Infrared, Millimeter, and Terahertz Waves\",\"volume\":\"138 1\",\"pages\":\"1-2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-12-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2011 International Conference on Infrared, Millimeter, and Terahertz Waves\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IRMMW-THZ.2011.6104761\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IRMMW-THZ.2011.6104761","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nanocomposite Sc2O3-added tungsten dispenser cathodes were tested in Cathode Life Test Vehicles (CLTV) with a Pierce gun configuration under CW mode. The emission performance for both dc and pulsed current density remained consistent. In CLTV #1, owing to perveance issue (there is 100 micron gap between focus electrode and cathode emission surface), 10 A/cm2 dc current density can be acquired at practical temperature of 1120°C Br for more than 2000 hours. In CLTV #2 with reduced FE gap, 45 A/cm2 dc current density is obtained.