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
CountryKorea, 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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