Thermionic Emission of Impregnated Dispenser Cathodes at Low Temperature

被引：0
|
作者：
Zheng, Q. [1 ]
Yin, Shengyi [1 ]
Peng, Zhen [2 ]
Wang, Yu [1 ]
Wang, Xinxin [1 ]
Li, Yang [1 ]
机构：
[1] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
来源：
2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2013年
关键词：
thermionic emission; impregnated dispenser cathodes; low temperature;
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：
It has proved that the superior emission capability of a new type impregnated dispenser cathode through impregnates the BaO/SrO/Sc2O3 active substances and covers a mixture W+BaO/SrO/Sc2O3 coating by the pulse laser deposition. However, the thermionic emission of this impregnated dispenser cathode at low temperature is not clear. Our results illustrate that the Current-voltage characteristics of this new impregnated dispenser cathode preserve unsaturated behavior. The maximum of the current density is 2.1 Acm(-2) occurring at 650 degrees C for the applied voltage from 0 to 3000 V. These results provide hope to further investigate the emission mechanism and make this cathode also applicable for vacuum electron tubes.
引用
收藏
页数：2
相关论文
共 50 条
  • [1] THERMIONIC EMISSION FROM DISPENSER CATHODES
    ZHANG, EQ
    INTERNATIONAL JOURNAL OF ELECTRONICS, 1985, 58 (01) : 141 - 149
  • [2] THERMIONIC EMISSION FROM DISPENSER CATHODES
    AHMED, H
    BECK, AHW
    JOURNAL OF APPLIED PHYSICS, 1963, 34 (04) : 997 - &
  • [3] IMPREGNATED DISPENSER CATHODES
    SHROFF, AM
    PALLUEL, P
    REVUE TECHNIQUE THOMSON-CSF, 1982, 14 (03): : 583 - 655
  • [4] Surface analysis of thermionic dispenser cathodes
    Cortenraad, R
    van der Gon, AWD
    Brongersma, HH
    Gärtner, G
    Manenschijn, A
    APPLIED SURFACE SCIENCE, 2002, 191 (1-4) : 153 - 165
  • [5] Structural Engineering of Impregnated Dispenser Cathodes
    Get'man, O. I.
    Skorokhod, V. V.
    POWDER METALLURGY AND METAL CERAMICS, 2015, 53 (11-12) : 701 - 721
  • [6] Quantitative LEIS analysis of thermionic dispenser cathodes
    Cortenraad, R.
    Denier Van Der Gon, A.W.
    Brongersma, H.H.
    Gärtner, G.
    Manenschijn, A.
    Applied Surface Science, 1999, 146 (01): : 69 - 74
  • [7] Structural Engineering of Impregnated Dispenser Cathodes
    O. I. Get’man
    V. V. Skorokhod
    Powder Metallurgy and Metal Ceramics, 2015, 53 : 701 - 721
  • [8] OXIDATION STUDIES OF IMPREGNATED DISPENSER CATHODES
    HECHT, MH
    LINDAU, I
    CHEN, DS
    JOURNAL OF APPLIED PHYSICS, 1982, 53 (12) : 9021 - 9028
  • [9] Quantitative LEIS analysis of thermionic dispenser cathodes
    Cortenraad, R
    van der Gon, AWD
    Brongersma, HH
    Gärtner, G
    Manenschijn, A
    APPLIED SURFACE SCIENCE, 1999, 146 (1-4) : 69 - 74
  • [10] DC Emission Characteristic of Nanosized-Scandia-Doped Impregnated Dispenser Cathodes
    Liang, Wenlong
    Wang, Yiman
    Wang, Jinshu
    Liu, Wei
    Yang, Fan
    IEEE TRANSACTIONS ON ELECTRON DEVICES, 2014, 61 (06) : 1749 - 1753
12345