Invention Grant
US09165737B2 High-brightness, long life thermionic cathode and methods of its fabrication
有权
高亮度，长寿命的热离子阴极及其制造方法
- Patent Title: High-brightness, long life thermionic cathode and methods of its fabrication
- Patent Title (中): 高亮度，长寿命的热离子阴极及其制造方法
-
Application No.: US13644281Application Date: 2012-10-04
-
Publication No.: US09165737B2Publication Date: 2015-10-20
- Inventor: Victor Katsap
- Applicant: NuFlare Technology, Inc.
- Applicant Address: JP Kanagawa
- Assignee: NuFlare Technology, Inc.
- Current Assignee: NuFlare Technology, Inc.
- Current Assignee Address: JP Kanagawa
- Agency: Whitham Curtis Christofferson & Cook, PC
- Main IPC: H01J19/04
- IPC: H01J19/04 ; H01J1/14 ; H01J1/13 ; H01J9/04 ; H01J1/148 ; H01J37/065
Abstract:
An improved cathode comprises a cone-shaped emitter with a carbon-based coating applied to the emitter cone surface, in which there is a narrow annular gap between the emitter body and the carbon coating. The gap prevents direct contact between the carbon coating and the crystalline emitting material, thereby preventing damaging interactions and extending the useful lifetime of the cathode.
Public/Granted literature
- US20140097736A1 High-Brightness, Long Life Thermionic Cathode and Methods of its Fabrication Public/Granted day:2014-04-10
Information query
