A dual quadrupole ion trap mass spectrometer
Résumé
Two quadrupole ion traps are used to carry out a mass spectrometer. The first concerns ion preparation with possible mass selection functions. The second is used as a mass analysis cell to obtain the secular frequency of simultaneously confined ions. After ion ejection, the secular frequencies are computed from the evolution of time-of-flight (TOF) histograms. Comments and results concerning the ion preparation are given. Then, the metrological parameters of the mass spectrometer prototype are examined: amplitude calibration, visibility, resolution, and mass range. (Int J Mass Spectrom 190/191 (1999) 59 – 68) © 1999 Elsevier Science B.V.