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 language | English |
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Pages (from-to) | 615-620 |
Number of pages | 6 |
Journal | Rapid Communications in Mass Spectrometry |
Volume | 8 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1994 |