Title :
LaB6-Based Gun Brightness vs Cathode Life
Author_Institution :
NuFlare Technol., Toshiba Machine America
Abstract :
Among commercially available cathodes, LaB6 seems to be the only one whose dimensions are changing considerably during its lifetime. Changing cathode geometry affects near-cathode field, emission current density, and, ultimately, its brightness. We report modeling results for the LaB6-based gun major parameters dependence on cathode changes during its lifetime
Keywords :
brightness; cathodes; electron beam lithography; electron guns; LaB6 cathodes; cathode life; emission current density; gun brightness; near-cathode field; Brightness; Cathodes; Crystalline materials; Current density; Electronic mail; Geometry; Land surface temperature; Lithography; Shape; Space charge;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666258
