Heidelberg 2015 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 21: Posters 4: Novelties in Molecular Physics
MO 21.1: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Toward spectroscopy with PAH and fullerene ions in a cryogenic trap — •Jürgen Göck1, Klaus Blaum1, Christian Breitenfeldt2, Ulrich Grözinger3, Thomas Henning3, Jonas Karthein1, Bastian Kern4, Sunil Kumar S.1, Christian Meyer1, Gaël Rouillé3, Dmitry Strelnikov4, Andreas Wolf1, Sebastian George1, and Holger Kreckel1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, Felix-Hausdorff-Straße 6, 17487 Greifswald, Germany — 3Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany — 4Institut für Physikalische Chemie II, Karlsruher Institut für Technologie, Kaiserstraße 12, 76131 Karlsruhe
Gas phase spectroscopy with large molecular ions is still a challenging subject. We are currently developing a novel technique which is based on sensitive detection of mid-infrared photons. For this we use the Cryogenic Trap for Fast ion beams (CTF) [1], which reflects the ions back and forth between two electrostatic mirrors. Einzel lenses focus the ion beam toward the trap center. The cryogenic temperature of the environment (<15 K) leads to residual-gas densities of 2000 particles/cm3, corresponding to a pressure of ∼10−13 mbar at room temperature, and an almost black-body radiation free background.
We will present the details about the available ion source and the ion optics used for the injection of the ions into the trap. The measurement principle and the experimental program will be discussed.
[1]M. Lange et al., Rev. Sci. Instrum. 81 (2010) 055105.