Miniature toroidal radio frequency ion trap mass analyzer

  • Stephen A. LammertEmail author
  • Alan A. Rockwood
  • Miao Wang
  • Milton L. Lee
  • Edgar D. Lee
  • Samuel E. Tolley
  • James R. Oliphant
  • Jeffrey L. Jones
  • Randall W. Waite
Focus: Van Berkel, 2005 Biemann Medal Awardee


A miniature ion trap mass analyzer is reported. The described analyzer is a 1/5-scale version of a previously reported toroidal radio frequency (rf) ion trap mass analyzer. The toroidal ion trap operates with maximum rf trapping voltages about 1 kV p-p or less; however despite the reduced dimensions, it retains roughly the same ion trapping capacity as conventional 3D quadrupole ion traps. The curved geometry provides for a compact mass analyzer. Unit-mass resolved mass spectra for n-butylbenzene, xenon, and naphthalene are reported and preliminary sensitivity data are shown for naphthalene. The expected linear mass scale with rf amplitude scan is obtained when scanned using a conventional mass-selective instability scan mode combined with resonance ejection.


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Copyright information

© American Society for Mass Spectrometry 2006

Authors and Affiliations

  • Stephen A. Lammert
    • 1
    • 2
    Email author
  • Alan A. Rockwood
    • 1
    • 2
  • Miao Wang
    • 1
  • Milton L. Lee
    • 1
  • Edgar D. Lee
    • 3
  • Samuel E. Tolley
    • 3
  • James R. Oliphant
    • 3
  • Jeffrey L. Jones
    • 3
  • Randall W. Waite
    • 3
  1. 1.Department of Chemistry and BiochemistryBrigham Young UniversityProvoUSA
  2. 2.Adjunct Research FacultyUSA
  3. 3.Palmar TechnologiesHighlandUSA

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