Rostock 2019 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 3: Mass Spectrometry - Posters

MS 3.2: Poster

Dienstag, 12. März 2019, 16:30–18:15, S Fobau Physik

Recent developments at the Greifswald MR-ToF device — •Paul Fischer, Gerrit Marx, and Lutz Schweikhard — Institut für Physik, Universität Greifswald, 17489 Greifswald, Germany

The multi-reflection time-of-flight mass spectrometer (MR-ToF MS) at the University of Greifswald is further employed to develop and refine related techniques. In particular, metal cluster ions are produced in a laser ablation source and stored between electrostatic mirrors for several hundreds of milliseconds, leading to high mass resolving powers and the possibility to study ion properties as well as the storage characteristics of the trap itself.

Recently, the behavior of short-term ToF fluctuations between measurements have been studied with respect to comparability when the ion species of interest and the species used for a subsequent offline correction exhibit large mass differences [1]. Furthermore, the system’s capabilities for the capture and selection of ions with large mass differences has been refined by employing multiple in-trap lift capture pulses and an in-trap deflection scheme allowing the retention of multiple ion species [2].

[1] P. Fischer et al., Int. J. Mass Spectrom. 432:44-51(2018)

[2] P. Fischer et al., Int. J. Mass Spectrom. (in print)