• DocumentCode
    1077157
  • Title

    Generation of High-Current-Density Sheet Electron Beams

  • Author

    Li, Lili ; Wang, Jinshu ; Wang, Yiman

  • Author_Institution
    Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing
  • Volume
    30
  • Issue
    3
  • fYear
    2009
  • fDate
    3/1/2009 12:00:00 AM
  • Firstpage
    228
  • Lastpage
    230
  • Abstract
    High-current-density sheet beams directly generated from scandia-doped dispenser cathodes have been studied for application to vacuum electron devices like terahertz sources. Rectangular beams with current densities of over 50 A/cm2 have been developed and demonstrated to maintain for several hundred hours with the cathode operating stably at 950degCb. Beam forming structures have been investigated and optimized by means of beam profile simulation and confirmed by test results.
  • Keywords
    backward wave oscillators; current density; electron beams; backward-wave oscillators; beam forming structures; high-current-density sheet electron beams; rectangular beams; scandia-doped dispenser cathodes; terahertz sources; vacuum electron devices; Electron beam; electron sources; scandium; terahertz radiation; thermionic emission;
  • fLanguage
    English
  • Journal_Title
    Electron Device Letters, IEEE
  • Publisher
    ieee
  • ISSN
    0741-3106
  • Type

    jour

  • DOI
    10.1109/LED.2008.2010783
  • Filename
    4757298
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1077157