• DocumentCode
    2924607
  • Title

    Hafnium carbide thermal sources in O2, CO and CO2 environments

  • Author

    Lovell, Josh M. ; Mackie, William A. ; Magera, Gerald G.

  • Author_Institution
    Appl. Phys. Technol., Inc., McMinnville, OR, USA
  • fYear
    2012
  • fDate
    24-26 April 2012
  • Firstpage
    303
  • Lastpage
    304
  • Abstract
    We have tested thermionic cathodes using (210) and (310) oriented hafnium carbide. These have been operated in UHV, and pressures of oxygen, CO2 and CO to 5 × 10-5 Torr. Emission data show slight initial improvements due to work function lowering. Relatively stable operation at 1900 K in oxygen or CO2 at 1 × 10-6 Torr is reported.
  • Keywords
    carbon compounds; electron emission; hafnium compounds; thermionic cathodes; CO2; HfC; UHV; electron emission data; hafnium carbide thermal sources; temperature 1900 K; thermionic cathodes; work function lowering; Cathodes; Crystals; Hafnium; Hybrid fiber coaxial cables; Temperature measurement; carbide; electron source; hafnium carbide; thermionic cathode;
  • 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.2012.6264183
  • Filename
    6264183
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2924607