• DocumentCode
    2924457
  • Title

    DC emission characteristic of Sc- Doped Impregnated Dispenser cathodes

  • Author

    Wang, Xi ; Liu, XWei ; Wang, Yiman ; Cui, Yuntao ; Wang, Jinshu

  • Author_Institution
    Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
  • fYear
    2012
  • fDate
    24-26 April 2012
  • Firstpage
    185
  • Lastpage
    186
  • Abstract
    Emission properties of Scandia Doped Impregnated (SDI) cathodes tested at DC model has been investigated in close-spaced diodes with water-cooled copper anodes. Space Charge Limited (SCL) current density of over 40 A/cm2 has been measured at 950°Cb after temperature compensation for electron cooling. The life test has lasted for more than 500 hours and is going on.
  • Keywords
    cathodes; cooling; current density; diodes; life testing; powders; scandium compounds; space charge; tungsten; DC emission characteristic; SCL current density; W:Sc2O3; close-spaced diode; electron cooling; impregnated dispenser cathode; life testing; powder; space charge limited current density; temperature compensation; water-cooled copper anode; Anodes; Cathodes; Current density; Density measurement; Heating; Temperature measurement; scandate cathode; thermionic emission; vacuum electron devices;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
  • Conference_Location
    Monterey, CA
  • Print_ISBN
    978-1-4673-0368-2
  • Type

    conf

  • DOI
    10.1109/IVESC.2012.6264176
  • Filename
    6264176
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2924457