• DocumentCode
    3691577
  • Title

    A directly heated high emission density low-temperature cathode

  • Author

    Shikai Qi;Xiaoxia Wang;Jirun Luo;Mingwei Hu;Yun Li

  • Author_Institution
    University of Chinese Academy of Sciences, Beijing 100190, P.R. China
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    In order to enhance output power and prolong lifetime of the high-power continuous wave magnetron tubes, a novel Y2O3-Gd2O3-ZrO2 impregnate W sponge layer directly heated cathode is researched. The testing results show that the DC emission density of the cathode can reach 3.58A/cm2 at a temperature of 1750°C. Lifetime experiment results show that the thermionic emission current density is still above 1.5A/cm2 after 2600h operation.
  • Keywords
    "Cathodes","Heating","Temperature measurement","Electron tubes","Thermionic emission","Anodes","Temperature"
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
  • ISSN
    2162-2027
  • Electronic_ISBN
    2162-2035
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2015.7327793
  • Filename
    7327793
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691577