Electron gun comprising a tubular electrode having a coiled portion formed therein

An electron gun that can provide a desired electron beam modulation effect without preventing a modulation magnetic field from passing from an exterior of the vacuum portion is provided. A part of a tubular G3 electrode in an electron gun is formed into a coiled portion to allow the modulation magne...

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Bibliographische Detailangaben
Hauptverfasser: OHMAE HIDEHARU, KONDA MASAHIKO, HOSHI TOSHIHARU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An electron gun that can provide a desired electron beam modulation effect without preventing a modulation magnetic field from passing from an exterior of the vacuum portion is provided. A part of a tubular G3 electrode in an electron gun is formed into a coiled portion to allow the modulation magnetic field to pass through the clearances between parts of a wire composing the coiled portion.