Mass selective ejection by axial resonant excitation from a linear ion trap
- Yuichiro HashimotoAffiliated withCentral Research Laboratory, Hitachi, Ltd. Email author
- , Hideki HasegawaAffiliated withCentral Research Laboratory, Hitachi, Ltd.
- , Takashi BabaAffiliated withCentral Research Laboratory, Hitachi, Ltd.
- , Izumi WakiAffiliated withCentral Research Laboratory, Hitachi, Ltd.
We describe a new mass selective ejection method from a linear ion trap, which we call axial resonant excitation (AREX). A set of vane lenses are inserted between each quadrupole rod to produce electrostatic potential that is approximately harmonic along the central axis of the quadrupole field. After ions with specific m/z are resonantly oscillated in the axial direction, the ions are mass selectively ejected in the axial direction. At a high scan rate of 11 Th/ms, AREX achieved a high ejection efficiency of more than 60%, which is more than three times higher than a conventional mass selective axial ejection method from a linear trap using fringing field.
- Mass selective ejection by axial resonant excitation from a linear ion trap
Journal of the American Society for Mass Spectrometry
Volume 17, Issue 5 , pp 685-690
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