Space-charge lens for focusing negative ion beam
The idea of a space-charge lens for focusing intensive negative hydrogen ion beams is presented. Estimations of focal length of the lens are performed independent of parameters of the beam and gaseous medium. The effectiveness of the focusing H − ion beam with current up to ∼30 mA and energy of ∼10...
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| Veröffentlicht in: | Review of Scientific Instruments 2002-03, Vol.73 (3), p.1161-1164 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The idea of a space-charge lens for focusing intensive negative hydrogen ion beams is presented. Estimations of focal length of the lens are performed independent of parameters of the beam and gaseous medium. The effectiveness of the focusing
H
−
ion beam with current up to ∼30 mA and energy of ∼10 keV by means of such a lens is demonstrated experimentally. Measured values of focal length are in good agreement with calculated ones. |
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| ISSN: | 0034-6748 1089-7623 |
| DOI: | 10.1063/1.1431406 |