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The ‘hybrid cell’: a new compensated infinity cell for larger radius ion excitation in Fourier transform ion cyclotron resonance mass spectrometry
Author(s) -
Kim Sunghwan,
Choi Myoung Choul,
Hur Manhoi,
Kim Hyun Sik,
Yoo Jong Shin,
Hendrickson Christopher L.,
Marshall Alan G.
Publication year - 2008
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.3516
Subject(s) - fourier transform ion cyclotron resonance , chemistry , ion cyclotron resonance , excitation , atomic physics , ion , electric field , resonance (particle physics) , radius , ion trap , mass spectrometry , fourier transform , electrode , cyclotron , analytical chemistry (journal) , physics , computer security , organic chemistry , quantum mechanics , chromatography , computer science
A new ‘hybrid’ ion cyclotron resonance (ICR) trap is proposed and analyzed by computer simulations. The trap is basically a hybrid of a segmented end cap (Infinity) and capacitively coupled cylindrical cell, with additional electrodes placed at the center of each end cap. The new trap produces an on‐axis electric field z ‐profile similar to that of the Infinity cell or capacitively coupled open cylindrical cell during ion excitation. Simion simulations demonstrate that, during detection, appropriate changes of the potentials applied to the two new sets of electrodes produce a radial electric field z ‐profile that more closely approaches that for an ideal axial three‐dimensional quadrupolar potential at high post‐excitation ICR orbital radius, for improved signal‐to‐noise ratio and resolving power, and minimal m/z ‐discrimination. Copyright © 2008 John Wiley & Sons, Ltd.