Ion funnel

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Ion funnel
Series of stacked ring electrodes with progressively decreasing inner diameter to which a combined radio frequency and fixed potential is applied. The resulting field focuses ions travelling along the central axis.
Related Term(s):

S. A. Shaffer, K. Q. Tang, G. A. Anderson, D. C. Prior, H. R. Udseth, R. D. Smith. Rapid Commun. Mass Spectrom. 11, 1813 (1997).

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

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