Emission Uniformity of an Annular Graphite Cathode With a Focusing Electrode in a High Power Vacuum Diode

被引：6
|
作者：
Wu, Xiaoling [1 ]
Chen, Changhua [2 ]
Wu, Ping [2 ]
Teng, Yan [2 ]
Li, Shuang [2 ]
Zhu, Xiaoxin [2 ]
机构：
[1] Tsinghua Univ, Key Lab Particle & Radiat Imaging, Minist Educ, Beijing 100084, Peoples R China
[2] Northwest Inst Nucl Technol, Sci & Technol High Power Microwave Lab, Xian 710024, Peoples R China
来源：
IEEE ACCESS | 2020年 / 8卷
关键词：
Emission uniformity; graphite cathode; grooved cathode; low guiding magnetic field; high power microwave generation; BACKWARD-WAVE OSCILLATOR; OPERATION;
D O I：
10.1109/ACCESS.2020.2968630
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The emission uniformity of an annular knife-edged cathode in a coaxial diode with a focusing electrode and operating in a low macro electric field has been investigated. It was found that the emission uniformity deteriorated as the cathode width increased from 0.5 mm to 2.0 mm. To improve the emission uniformity, a grooved graphite cathode was prepared by a laser micro-etching treatment. Experimental results demonstrated that the emission threshold for the grooved cathode may be reduced and thus the delay in explosive emission can be decreased. Visual inspection of photographs of the cathode plasmas operating under different guiding magnetic fields (GMFs) was used to confirm improvements in emission uniformity. Even under a low GMF of 0.21 T, good emission uniformity was realized.
引用
收藏
页码：19026 / 19032
页数：7
相关论文
共 50 条
  • [41] HIGH-VOLTAGE VACUUM DIODE WITH COLD CATHODE FOR ELECTRON-BEAM INJECTION INTO GAS-LASER
    BUGAEV, SP
    KOCHKARE.AV
    MANYLOV, VI
    PAIGIN, VM
    PRIBORY I TEKHNIKA EKSPERIMENTA, 1974, (02): : 160 - 163
  • [42] Field Enhancement and Ion-Flow Focusing at the Multiemitter Cathode of a High-Current Plasma-Filled Diode
    Nefyodtsev, Evgeny V.
    Ozur, Grigory E.
    IEEE TRANSACTIONS ON PLASMA SCIENCE, 2009, 37 (08) : 1367 - 1374
  • [43] Explosive-emission cathode with resistive decoupling in a high-current plasma-filled diode
    Kiziridi, P. P.
    Ozur, G. E.
    12TH INTERNATIONAL CONFERENCE ON GAS DISCHARGE PLASMAS AND THEIR APPLICATIONS, 2015, 652
  • [44] Top-Emission Organic Light Emitting Diode Fabrication Using High Dissipation Graphite Substrate
    Tsai, Yu-Sheng
    Hong, Lin-Ann
    Huang, Jian-Ji
    Yeh, Kuan-Hung
    Juang, Fuh-Shyang
    INTERNATIONAL JOURNAL OF PHOTOENERGY, 2014, 2014
  • [45] Characterization of plasma expansion dynamics in a high power diode with a carbon-fiber-aluminum cathode
    Ju, J. -C.
    Liu, L.
    Cai, D.
    APPLIED PHYSICS LETTERS, 2014, 104 (23)
  • [46] Polythiophene/graphite fluoride composites cathode for high power and energy densities lithium primary batteries
    Yin, Xiaodong
    Li, Yu
    Feng, Yiyu
    Feng, Wei
    SYNTHETIC METALS, 2016, 220 : 560 - 566
  • [47] Pulsed high power source of spontaneous emission in the vacuum UV spectral region
    Kuznetsov, A.A.
    Skakun, V.S.
    Tarasenko, V.F.
    Fomin, E.A.
    Atmospheric and Oceanic Optics(English Edition of the Journal Optika Atmosfery i Okeana), 1993, 6 (06):
  • [48] Time-and-space resolved measurements of the emission uniformity of carbon fibre cathode in high-current pulsed discharge
    Liu Lie
    Li Li-Min
    Xu Qi-Fu
    Cheng Guo-Xin
    Chang Lei
    CHINESE PHYSICS B, 2010, 19 (03)
  • [49] Study on inhibition Of the M-Type Cathode edge emission in the high frequency vacuum electronic devices
    Wang, Hui
    Shao, Wensheng
    Juan, Gaoyu
    Yang, Pengyun
    Zhang, Ke
    2019 INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC), 2019,
  • [50] Time-and-space resolved measurements of the emission uniformity of carbon fibre cathode in high-current pulsed discharge
    刘列
    李立民
    徐启福
    程国新
    苌磊
    Chinese Physics B, 2010, (03) : 255 - 261
12345