Development of a Low-Work-Function Thermionic Cathode by Coating with LaB6 and Carbide

被引：0
|
作者：
Yokoyama, Tomoya [1 ]
Kobayashi, Takaya [1 ]
Murata, Hidekazu [1 ]
Rokuta, Eiji [1 ]
Shiroyama, Hiroshi [1 ]
Yasuda, Hiroshi [2 ]
Ooae, Yoshihisa [2 ]
机构：
[1] Meijo Univ, Fac Sci & Technol, Tempaku Ku, 1-501 Shiogamaguchi, Nagoya, Aichi 4688502, Japan
[2] PARAM Corp, 4-44-4 Dai Machi, Hachioji, Tokyo 1930931, Japan
来源：
2018 31ST INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC) | 2018年
关键词：
lanthanum hexaboride; carbide solution; thermionic emission; work function;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
novel electron gun with lanthanum hexaboride (LaB6) thermionic cathodes with relatively low work functions is being developed by coating the metal surface with another material. When operated under thermionic emission mode, this tool provides both high brightness and high beam current simultaneously, has a long lifetime, and offers good stability during operation. Herein, we describe the basic design concept for a novel LaB6 cathode involving infiltration of a carbide solution. Moreover, we experimentally measured the thermionic-emission-mode work function of the rhenium surface modified with a LaB6 single-crystal powder and carbide solution.
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页数：2
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