A simple centripetal force model for explaining the focusing effect of ion funnels

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Allers, M.; Kirk, A.T.; Zimmermann, S.: A simple centripetal force model for explaining the focusing effect of ion funnels. In: International Journal of Mass Spectrometry 432 (2018), S. 14-17. DOI: https://doi.org/10.1016/j.ijms.2018.07.002

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/4409

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Abstract: 
The ion funnel is one of the key components for transferring ions from higher pressure into vacuum. While known for over twenty years and thoroughly analyzed by mathematical means and simulations, its working principle might be difficult to understand sometimes. In this work, we propose a simple thought experiment based on the centripetal force ions experience inside the ion funnel, which offers a simplistic explanation for the focusing force in an ion funnel. Our centripetal force model can predict the proportionalities of the resulting pseudopotential and should be a good didactical tool.
License of this version: CC BY-NC-ND 3.0
Document Type: article
Publishing status: acceptedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Elektrotechnik und Informatik

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1 image of flag of Germany Germany 5 100.00%

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