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Simulation of ion trajectories in a quadrupole ion trap: a comparison of three simulation programs
Author(s) -
Forbes M. W.,
Sharifi M.,
Croley T.,
Lausevic Z.,
March R. E.
Publication year - 1999
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/(sici)1096-9888(199912)34:12<1219::aid-jms897>3.0.co;2-l
Subject(s) - ion , collision , chemistry , quadrupole , ion trap , trajectory , consistency (knowledge bases) , computational physics , quadrupole ion trap , field (mathematics) , trap (plumbing) , simulation , atomic physics , computer science , physics , quantum mechanics , computer security , mathematics , organic chemistry , artificial intelligence , meteorology , pure mathematics
An attempt has been made to compare the performance, design and operation of three simulators, ISIS, ITSIM and SIMION‐3D, when applied to the calculation of ion trajectories in a quadrupole ion trap. For the simulation of the trajectory of a single ion in a collision‐free system, the calculated spatial trajectory components, kinetic energies and secular frequencies from the three simulators were virtually identical. It is concluded that, despite the various approaches to electrode design, calculation of fields, integration methods and ion generation tactics, there is a remarkable degree of consistency among the products of the simulators when dealing with collision‐free conditions. The results of the ion injection simulations under collisional conditions were indicative of the complexity that can be introduced into the simulations with little effort. Random effects such as collisions of ions with He buffer gas and accumulated calculation errors together with the different collision model settings and the different approaches to field calculation are thought to have contributed to the somewhat minor differences in trapping efficiency. SIMION is the simulator of choice for the simulation of ion trajectories in hybrid instruments and in custom‐designed assemblies of electrodes; and ITSIM would appear to be the best choice on the basis of computational speed for running multiparticle simulations and user friendliness. Both ISIS and ITSIM are adept at providing detailed information of collision events. Copyright © 1999 John Wiley & Sons, Ltd.