Field-emission X-ray sources with an anisotropic focusing lens for isotropic X-ray focal spots

Sunshin Jung, Won Suk Chang, Beom Seok Kim, Daeho Kim, Seung Kwon Seol, Yang Doo Lee, Byeong Kwon Ju, Kyu Chang Park, Hun Kuk Park

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Hermetic-sealed field-emission X-ray sources with an anode voltage and current of 70 kV and 0.5 mA have been developed using an anisotropic focusing electron lens structure for an isotropic focal spot. The anisotropic focusing of an electron beam was achieved using an electrostatic electron lens with anisotropic aperture geometry integrated in a gate (or grid) electrode. The anisotropic geometry has an influence on the electron beam with different horizontal and vertical electric fields, thereby anisotropically focusing the beam on an anode target.

    Original languageEnglish
    Title of host publicationTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012Om
    Pages66-67
    Number of pages2
    DOIs
    Publication statusPublished - 2012
    Event25th International Vacuum Nanoelectronics Conference, IVNC 2012 - Jeju, Korea, Republic of
    Duration: 2012 Jul 92012 Jul 13

    Publication series

    NameTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012

    Other

    Other25th International Vacuum Nanoelectronics Conference, IVNC 2012
    Country/TerritoryKorea, Republic of
    CityJeju
    Period12/7/912/7/13

    Keywords

    • carbon nanotube emitter
    • effective focal spot
    • field-emission X-ray source
    • focusing lens

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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