Ion beam transport in gas-filled radio-frequency quadrupoles at intermediate pressures
Ion transport and focusing in radio-frequency (rf) quadrupole channels filled with a buffer gas at an intermediate pressure (100–1000 Pa) are studied theoretically through numerical simulation based on a combined model of ion-molecule interactions. The simulations uncovered specific effects that app...
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Veröffentlicht in: | Technical physics 2009-09, Vol.54 (9), p.1355-1362 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Ion transport and focusing in radio-frequency (rf) quadrupole channels filled with a buffer gas at an intermediate pressure (100–1000 Pa) are studied theoretically through numerical simulation based on a combined model of ion-molecule interactions. The simulations uncovered specific effects that appear in the considered gas pressure range: “quasi-absolute” stability of motion of small-mass ions and radial boundedness of the ion focusing region. |
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ISSN: | 1063-7842 1090-6525 |
DOI: | 10.1134/S1063784209090163 |