Open AccessA versatile setup for studying size and charge-state selected polyanionic nanoparticles
Author(s) -
K. Raspe,
M. Müller,
Norman Iwe,
R. Wolf,
P. Oelßner,
Franklin Martinez,
L. Schweikhard,
K. H. MeiwesBroer,
J. Tiggesbäumker
Publication year - 2022
Publication title -
review of scientific instruments online/review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/5.0085187
Subject(s) - materials science , nanoparticle , chemical physics , charge (physics) , electron , x ray photoelectron spectroscopy , modular design , radio frequency , process (computing) , nanotechnology , atomic physics , analytical chemistry (journal) , computer science , chemistry , physics , nuclear magnetic resonance , telecommunications , quantum mechanics , operating system , chromatography
Using the example of metal clusters, an experimental setup and procedure is presented, which allows for the generation of size and charge-state selected polyanions from monoanions in a molecular beam. As a characteristic feature of this modular setup, the further charging process via sequential electron attachment within a three-state digital trap takes place after mass-selection. In contrast to other approaches, the rf-based concept permits access to heavy particles. The procedure is highly flexible with respect to the preparation process and potentially suitable for a wide variety of anionic species. By adjusting the storage conditions, i.e., the radio frequency, to the change in the mass-to-charge ratio, we succeeded in producing clusters in highly negative charge states, i.e., [Formula: see text]. The capabilities of the setup are demonstrated by experiments extracting electronic and optical properties of polyanionic metal clusters by analyzing the corresponding photoelectron spectra.