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Wide‐mass‐range axialization for high‐resolution Fourier‐transform ion cyclotron resonance mass spectrometry of externally generated ions
Author(s) -
Marto Jarrod A.,
Guan Shenheng,
Marshall Alan G.,
Buchanan Michelle V.
Publication year - 1994
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290080809
Subject(s) - fourier transform ion cyclotron resonance , chemistry , ion , mass spectrometry , ion source , ion cyclotron resonance , selected ion monitoring , analytical chemistry (journal) , ion beam deposition , ion gun , ion trap , time of flight mass spectrometry , top down proteomics , reflectron , atomic physics , ionization , selected reaction monitoring , cyclotron , tandem mass spectrometry , physics , gas chromatography–mass spectrometry , organic chemistry , chromatography
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.
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