Ion cyclotron resonance time-of-flight spectroscopy. Kinetic energy of p-iodotoluene photodissociation fragment ions

1988 ◽  
Vol 92 (20) ◽  
pp. 5706-5709 ◽  
Author(s):  
Robert C. Dunbar ◽  
Gary H. Weddle
Keyword(s):  
Kinetic Energy ◽  
Cyclotron Resonance ◽  
Time Of Flight ◽  
Ion Cyclotron Resonance ◽  
Fragment Ions ◽  
Ion Cyclotron ◽  
Time Of Flight Spectroscopy

scholarly journals Native MS Analysis of Bacteriorhodopsin and an Empty Nanodisc by Orthogonal Acceleration Time-of-Flight, Orbitrap and Ion Cyclotron Resonance

2016 ◽  
Vol 88 (24) ◽  
pp. 12427-12436 ◽  
Author(s):  
Iain D. G. Campuzano ◽  
Huilin Li ◽  
Dhanashri Bagal ◽  
Jennifer L. Lippens ◽  
Juraj Svitel ◽  
...  
Keyword(s):  
Cyclotron Resonance ◽  
Time Of Flight ◽  
Ion Cyclotron Resonance ◽  
Acceleration Time ◽  
Orthogonal Acceleration ◽  
Native Ms ◽  
Ms Analysis ◽  
Ion Cyclotron

Theory of Ion Cyclotron Resonance

1974 ◽  
Vol 52 (5) ◽  
pp. 436-455 ◽  
Author(s):  
M. Bloom ◽  
M. Riggin
Keyword(s):  
Kinetic Energy ◽  
Cyclotron Resonance ◽  
Ad Hoc ◽  
Rectangular Cross Section ◽  
Equations Of Motion ◽  
Average Kinetic Energy ◽  
Ion Cyclotron Resonance ◽  
Cyclotron Motion ◽  
Ion Cyclotron ◽  
Energy Dependent

A theoretical analysis is given of the most commonly used type of ion cyclotron resonance (ICR) spectrometer, which has a cell of rectangular cross section. Though the equations of motion of the ions in this cell are extremely nonlinear, it has been possible to simplify the analysis by exploiting the facts that the longitudinal oscillations in the trapping potential are approximately decoupled from the cyclotron motion and that the cyclotron frequency [Formula: see text] the trapping oscillation frequency [Formula: see text] the spread of instantaneous cyclotron frequencies in the trap. A method is described for constructing an ensemble of ions appropriate to the mechanism of ion production and to the various drift and trapping voltages employed in the ICR cell. Line shapes are calculated in the collisionless regime. An ad hoc "average ion" model is presented, which simplifies the analysis of the spatial distribution of the ions through the dependence of the effective ICR frequency and line width on cell voltages and dimensions. Finally, an explicit distribution function is derived for the ion kinetic energy in the cell. The effect of a uniform RF electric field at resonance is shown to increase not only the average kinetic energy, but the spread of energies as well. A substantial spread of energies is also produced by the trapping oscillations. The breadth of the kinetic energy distribution complicates the interpretation of energy dependent processes using ICR under conditions normally used up to now. Some improved techniques for the study of energy dependent cross sections are proposed.

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