Wide‐mass‐range axialization for high‐resolution Fourier‐transform ion cyclotron resonance mass spectrometry of externally generated ions

Jarrod A. Marto, Shenheng Guan, Alan G. Marshall, Michelle V. Buchanan

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Ions generated in both continuous and pulsed‐mode external ion sources are injected into an open‐ended cylindrical Fourier‐transform ion cyclotron resonance ion trap by means of an electrostatic ion guide consisting of concentric cylinder and wire electrodes to which a potential difference is applied. Broadband axialization during ion injection improves ion trapping efficiency by reducing the ion off‐axis displacement. Significant improvements in both signal‐to‐noise ratio and mass resolving power, along with high mass selectivity are demonstrated for ions generated by external Cs+ secondary ion mass spectrometry or by matrix‐assisted laser desorption/ionization.

Original languageEnglish
Pages (from-to)615-620
Number of pages6
JournalRapid Communications in Mass Spectrometry
Volume8
Issue number8
DOIs
StatePublished - Aug 1994

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