Title :
Thermionic emission of a novel cathode applied in high-power continuous wave magnetron tubes
Author :
Shikai Qi ; Xiaoxia Wang ; Jirun Luo ; Mingwei Hu ; Qinglan Zhao ; Yun Li ; Qi Zhang
Author_Institution :
Key Lab. of High Power Microwave Sources & Technol., Inst. of Electron., Beijing, China
Abstract :
In order to enhance output power and prolong lifetime of the high-power continuous wave magnetron tubes, a novel La2Zr2O7 impregnated cathode is adopted to enhance the thermionic emission. In this abstract, we compare the thermionic emission ability of this cathode with traditional pure W filament cathode. Experimental results show that this cathode can provide the same thermionic emission with at least 300 ° lower than pure W filament cathode.
Keywords :
cathodes; lanthanum compounds; magnetrons; thermionic emission; tungsten; La2Zr2O7; W; filament cathode; high-power continuous wave magnetron tubes; impregnated cathode; thermionic emission; Cathodes; Electron emission; Electron tubes; Lanthanum; Power generation; Thermionic emission; Zirconium; alloy cathode; lifetime; resistive electron and ion bombing; thermionic emission; thermostability;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223864
