Ion Mobility Mass Spectrometry: The design of a new high-resolution ion mobility instrument with applications toward electronic-state characterization of first-row transition metal cations

- The design of an instrument that couples a 2-m-long, high-resolution ion mobility drift tube with a quadrupole mass spectrometer is described.
- The reduced mobilities for both the ground-state and electronic excited-state configurations of the first-row transition metal cations have been measured to characterize the performance of the instrument.
- The reduced mobility of Sc+ is presented here for the first time.
- A discussion of the relative merits of short and long drift-length mobility instruments is included, as well as an examination of the accuracy expected in the present instrument.