@article {1097,
	title = {Linear ion traps in mass spectrometry},
	journal = {Mass Spectrometry Reviews},
	volume = {24},
	number = {1},
	year = {2005},
	note = {ISI Document Delivery No.: 888OJTimes Cited: 73Cited Reference Count: 145},
	month = {Jan-Feb},
	pages = {1-29},
	type = {Review},
	abstract = {Linear ion traps are finding new applications in many areas of mass spectrometry. In a linear ion trap, ions are confined radially by a two-dimensional (2D) radio frequency (RF) field, and axially by stopping potentials applied to end electrodes. This review focuses on linear ion trap instrumentation. Potentials and ion motion in linear multipole fields and methods of ion trapping, cooling, excitation, and isolation are described. This is followed by a description of various mass discrimination effects that have been reported with linear ion traps. Linear ion traps combined in various ways with three-dimensional (3D) traps, time-of-flight (TOF) mass analyzers, and Fourier transform ion cyclotron resonance mass spectrometers are then given. Linear ion traps can be used as stand alone mass analyzers, and their use for mass analysis by Fourier transforming image currents, by mass selective radial ejection, and by mass selective axial ejection are reviewed. (C) 2004 Wiley Periodicals, Inc.},
	keywords = {analysis, CYCLOTRON-RESONANCE, ELECTROSPRAY-IONIZATION, EXCITATION, EXTERNAL ACCUMULATION, FRINGING FIELDS, INVERSE FOURIER-TRANSFORM, ion traps, linear multipoles, mass, MOLECULE REACTION, OCTOPOLE FIELDS, OF-FLIGHT, QUADRUPOLE, RADIOFREQUENCY, RESONANCE, space charge, STORAGE ASSISTED DISSOCIATION, SYSTEM},
	isbn = {0277-7037},
	url = {<Go to ISI>://000226383800001},
	author = {Douglas, D. J. and Frank, A. J. and Mao, D. M.}
}
@article {5040,
	title = {A combined linear ion trap time-of-flight system with improved performance and MSn capabilities},
	journal = {Rapid Communications in Mass Spectrometry},
	volume = {15},
	number = {19},
	year = {2001},
	note = {ISI Document Delivery No.: 477JFTimes Cited: 47Cited Reference Count: 28},
	pages = {1777-1795},
	type = {Article},
	abstract = {A detailed description of a linear ion trap time-of-flight (TOF) mass spectrometer system, capable of sequential mass spectrometry (MS{\textquoteright}), is given. Many improvements have been incorporated since the initial description of this system (Rapid Commun. Mass Spectrom. 1998; 12:1463-1474). The pressure in the trap has been lowered from 7.0 to 1.8 mTorr, resulting in an increase in the mass resolution of ion excitation from 75 to 240. Use of the system for MS3 is demonstrated. Dipole excitation of the n = I harmonic, instead of the n = 0 fundamental frequency of ion motion, is shown to have a higher frequency resolution, f/Deltaf, but lower mass resolution, m/Deltam. Both experiments and modeling demonstrate that at the lower pressure there is less collisional cooling of ions in the axial and radial directions of the trap. The efficiency of trapping is shown to be nearly 100\% for periods up to 5 s. The demonstrated mass range for mass analysis has been extended to greater than m/z 16 250. To avoid the formation of adduct ions when trapping protein ions for extended times requires ultra-high vacuum cleanliness conditions, even though the trap operates in the mTorr-pressure range. Upgrading the TOF to a reflectron with higher quality ion optics results in an increase in the mass resolution of the TOF mass spectrometer to about 5000 at m/z 750. Copyright (C) 2001 John Wiley \& Sons, Ltd.},
	keywords = {COLLISION CELL, EXCITATION, GUIDE, INTERFACE, MOLECULE, QUADRUPOLE MASS-SPECTROMETER, reaction, STORAGE ASSISTED DISSOCIATION},
	isbn = {0951-4198},
	url = {<Go to ISI>://000171279800001},
	author = {Collings, B. A. and Campbell, J. M. and Mao, D. M. and Douglas, D. J.}
}
