Mainz 2017 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 7: Poster
MS 7.14: Poster
Wednesday, March 8, 2017, 17:00–19:00, P OG1
A simple, low-cost radio-frequency ion deflector for mass separation — •Magnus Schlösser1,2, Vitaly Rudnev2, and Ángel González Ureña2 — 1Karlsruhe Institute of Technology, Institute of Technical Physics, Tritium Laboratory Karlsruhe, GER — 2Universidad Complutense de Madrid, Instituto Pluridisciplinar, ES
Electrostatic cylindrical deflectors are routinely used as energy analyzer for ion beams. We present that by imposing of a radio-frequency modulation on the deflecting electric field, the ion transmission becomes mass dependent. By the choice of the appropriate frequency, amplitude, and phase, the deflector can be used as mass filter (without employing a magnetic field). The device has a very simple design, little cost and low machining requirements for mechanical workshops, and may therefore be of interest for certain applications.
We show the basic working principle of the instrument which is underlined by numerical simulations. This concept is demonstrated experimentally on a beam of molecular anions and it is shown how the different masses can be focussed in space and time by optimized settings of the radio-frequency parameters of the bender.