A versatile setup for studying size and charge-state selected polyanionic nanoparticles.

  title={A versatile setup for studying size and charge-state selected polyanionic nanoparticles.},
  author={K. Raspe and Manuel M{\"u}ller and N. Iwe and R. N. Wolf and P Oel{\ss}ner and Fernando O. Mart{\'i}nez and Lutz Schweikhard and Karl‐Heinz Meiwes‐Broer and Josef Tiggesb{\"a}umker},
  journal={The Review of scientific instruments},
  volume={93 4},
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… 

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