Sc/sub - 2/O/sub - 3/掺杂钨体亚微米结构鳞片型阴极的特性

IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839) Pub Date : 2004-09-06 DOI:10.1109/IVESC.2004.1414170

Haiqing Yuan, X. Gu, Kexin Pan, Yiman Wang, W. Liu, Ke Zhang, Jingshu Wang, Meili Zhou, Ji Li

{"title":"Sc/sub - 2/O/sub - 3/掺杂钨体亚微米结构鳞片型阴极的特性","authors":"Haiqing Yuan, X. Gu, Kexin Pan, Yiman Wang, W. Liu, Ke Zhang, Jingshu Wang, Meili Zhou, Ji Li","doi":"10.1109/IVESC.2004.1414170","DOIUrl":null,"url":null,"abstract":"Development and improvement of scandate-type cathode have been continuously in progress in last decade and recent years. Required by some new devices such as high power microwave sources, cathodes with current density of up to 100A/cm/sup 2/ at low pulse durations and relevant lifetime are being developed. Scandate type cathode has shown the emission capability of approaching to 100A/cm/sup 2/ or even more. Uniformization in emission, robustness in real environment and reproducibility in manufacturing process may be the major problems for their practical use. Based on previous study, we further developed the Scandia doping technique and cathode fabrication process. Cathodes with sub-micron structure Sc/sub 2/O/sub 3/ doped porous tungsten bodies have been successfully fabricated. Repeatable high emission properties were also verified for different batches of cathodes.","PeriodicalId":340787,"journal":{"name":"IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)","volume":"245 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Characteristics of scandate-type cathode with sub-micron structure Sc/sub 2/O/sub 3/ doped tungsten bodies\",\"authors\":\"Haiqing Yuan, X. Gu, Kexin Pan, Yiman Wang, W. Liu, Ke Zhang, Jingshu Wang, Meili Zhou, Ji Li\",\"doi\":\"10.1109/IVESC.2004.1414170\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Development and improvement of scandate-type cathode have been continuously in progress in last decade and recent years. Required by some new devices such as high power microwave sources, cathodes with current density of up to 100A/cm/sup 2/ at low pulse durations and relevant lifetime are being developed. Scandate type cathode has shown the emission capability of approaching to 100A/cm/sup 2/ or even more. Uniformization in emission, robustness in real environment and reproducibility in manufacturing process may be the major problems for their practical use. Based on previous study, we further developed the Scandia doping technique and cathode fabrication process. Cathodes with sub-micron structure Sc/sub 2/O/sub 3/ doped porous tungsten bodies have been successfully fabricated. Repeatable high emission properties were also verified for different batches of cathodes.\",\"PeriodicalId\":340787,\"journal\":{\"name\":\"IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)\",\"volume\":\"245 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IVESC.2004.1414170\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IVESC.2004.1414170","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

摘要

近十多年来，钪阴极的发展和改进一直在不断进行。由于大功率微波源等新器件的需要，在低脉冲持续时间和相关寿命下电流密度可达100A/cm/sup 2/的阴极正在开发中。鳞片型阴极显示出接近100A/cm/sup /甚至更高的发射能力。排放的均匀性、真实环境的鲁棒性和制造过程的可重复性可能是其实际应用的主要问题。在前人研究的基础上，进一步发展了钪掺杂技术和阴极制备工艺。成功制备了Sc/sub 2/O/sub 3/掺杂多孔钨体的亚微米结构阴极。在不同批次的阴极上验证了可重复的高发射特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Characteristics of scandate-type cathode with sub-micron structure Sc/sub 2/O/sub 3/ doped tungsten bodies

Development and improvement of scandate-type cathode have been continuously in progress in last decade and recent years. Required by some new devices such as high power microwave sources, cathodes with current density of up to 100A/cm/sup 2/ at low pulse durations and relevant lifetime are being developed. Scandate type cathode has shown the emission capability of approaching to 100A/cm/sup 2/ or even more. Uniformization in emission, robustness in real environment and reproducibility in manufacturing process may be the major problems for their practical use. Based on previous study, we further developed the Scandia doping technique and cathode fabrication process. Cathodes with sub-micron structure Sc/sub 2/O/sub 3/ doped porous tungsten bodies have been successfully fabricated. Repeatable high emission properties were also verified for different batches of cathodes.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)

自引率

0.00%

发文量