비의류제품

method of making a thermionic field emitter cathode. patent application

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 524
the face of a cathode surface is machined to provide a spiral surface finish with microscopic sharp symmetrical protrusions. the cathode gives enhanced emission due to field emission generated at the sharp symmetrical protrusions and due to the increased surface area
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