McMahon, T. B. and Beauchamp, J. L. (1971) Determination of Ion Transit Times in an Ion Cyclotron Resonance Spectrometer. Review of Scientific Instruments, 42 (11). pp. 1632-1638. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:MCMrsi71
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A method for directly determining ion transit times in an ion cyclotron resonance spectrometer has been developed which employs a simple combination of pulsed ion formation and time dependent trapping conditions. The variation of transit times with the adjustable parameters associated with the experiment (magnetic field strength, drift voltage, trapping voltage, pressure, and ion kinetic energy) is examined and found to be in quantitative agreement with the predictions of electrodynamic theory. The accurate determination of ion transit times facilitates the calculation of ion-molecule reaction rate constants of increased credibility. In addition, a technique for recording single resonance spectra by trapping voltage modulation is presented.
|Additional Information:||© 1971 The American Institute of Physics. Received 11 January 1971; revised 7 May 1971. We are indebted to P.G. Miasek for his assistance in analyzing the electrostatic fields in the cyclotron resonance cell. One of us (TBM) wishes to thank the National Research Council of Canada for fellowship support. This work was supported by the United States Atomic Energy Commission under Grant AT(04-3)767-8. [J.L.B. was an] Alfred P. Sloan fellow, 1968-1970. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 4189.|
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