Refine
Year of publication
- 2023 (1)
Document Type
- Doctoral Thesis (1)
Language
- English (1) (remove)
Has Fulltext
- yes (1)
Is part of the Bibliography
- no (1)
Keywords
- Aluminium (1)
- Cluster (1)
- Digital Ion Trap (1)
- Digitale Ionenfalle (1)
- Flugzeitspektrometrie (1)
- Ionenfalle (1)
- Metallcluster (1)
- Penning Trap (1)
- Penningfalle (1)
- Polyanion (1)
- Polyanionen (1)
- cluster (1)
- lebensdauerabhängige Auftrittsgrößen (1)
- lifetime-depentend appearance size (1)
- polyanion (1)
Institute
This thesis presents the production of polyanionic clusters within two ion storage devices:
Considering a Penning trap, the accessible range of polyanionic aluminium clusters has been expanded up to the 10th charge state. In particular, abundance curves for clusters with 5 to 9 excess electrons have been measured for the first time and analysed with respect to their lifetime-dependent appearance sizes. These sizes reveal a nearly quadratic dependency on the charge state for experimentally accessible lifetimes.
Additionally, the production of polyanionic clusters has been enabled in a radiofrequency ion trap. Therefore, the transition from a harmonic to a digital 2- and 3-state guiding signal has been investigated with respect to the ion storage. The passing of electrons through the trap during field-free periods of the guiding signal led to the first production of polyanionic clusters within a radiofrequency ion trap.