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
Hauptverfasser: Kurnin, I. V., Yavor, M. I.
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.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784209090163