Electron injection in ion implanter magnets

One or more electron sources are utilized to inject electrons into an ion beam being transported between the polepieces of a magnet. In some embodiments, the electron sources are located in cavities in one or both polepieces of the magnet. In other embodiments, a radio frequency or microwave plasma...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SMATLAK DONNA L, HERMANSON ERIC, BUFF JAMES, RENAU ANTHONY
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:One or more electron sources are utilized to inject electrons into an ion beam being transported between the polepieces of a magnet. In some embodiments, the electron sources are located in cavities in one or both polepieces of the magnet. In other embodiments, a radio frequency or microwave plasma flood gun is located in a cavity in at least one of the polepieces or between the polepieces.