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Ion Trajectory Calculations for a Quadrupole‐ion‐trap Reflectron‐time‐of‐flight Hybrid Instrument: Effects of the Initial RF‐Phase and the Trapping Time on an Ion Bunch Produced from a Molecular Beam
Author(s) -
Wilhelm Ulf,
Weickhardt Christian,
Grotemeyer Jürgen
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19960315)10:4<473::aid-rcm509>3.0.co;2-b
Subject(s) - reflectron , chemistry , ion , ion trapping , ion trap , atomic physics , trapping , time of flight , quadrupole , phase (matter) , trap (plumbing) , mass spectrometry , quadrupole ion trap , analytical chemistry (journal) , time of flight mass spectrometry , physics , ionization , ecology , organic chemistry , chromatography , meteorology , biology
SIMION calculations are compared with experimental observations of ion bunch parameters such as average kinetic energy, time‐of‐flight, and mass resolution as a function of the storage time and the initial phase in the quadrupole ion trap of a trap‐reflectron hybrid instrument (TRAPTOF). It is shown that the proper choice of RF frequency and inital phase results in favourable experimental conditions even without the use of a buffer gas inside the trap. Synchronization of all events in the instrument relative to the RF trapping field is the most important prerequisite.