Parts | Days | Selection | Search | Updates | Downloads | Help
MO: Fachverband Molekülphysik
MO 16: Posters 3: Experimental Techniques and Theoretical Approaches
MO 16.14: Poster
Thursday, March 9, 2017, 17:00–19:00, P OG1
A novel spectroscopy technique for complex molecular ions in the gas phase — •Jürgen Göck1, Klaus Blaum1, Christian Breitenfeldt1,2, Ulrich Gröozinger3, Sebastian George1, Thomas Henning3, Holger Kreckel1, Sunil Kumar S1, Christian Meyer1, Gaël Rouillé3, Dmitry Strelnikov4, and Andreas Wolf1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, Greifswald, Germany — 3Max-Planck-Institut für Astronomie, Heidelberg, Germany — 4Institut für Physikalische Chemie II, Karlsruher Institut für Technologie, Karlsruhe, Germany
The origin of the diffuse interstellar bands (DIBs)[1] and the unidentified infrared emission bands (UIEs) are long-standing questions in the field of astrophysics. DIBs are interstellar absorption features in the visible to near-infrared range, whereas the UIEs can be found in the emission spectra of astronomical objects. Complex molecular ions are candidates in particular since the first and only DIB carrier identified so far is the C60+ ion[2]. At the Max-Planck-Institut für Kernphysik we are developing a new technique for gas-phase spectroscopy of molecular ions that combines a cryogenic ion trap, which emulates the extreme conditions in the interstellar medium (10 K and 2000 particles/cm3), with extremely sensitive mid-infrared detectors. The experimental aim is to identify unknown carrier species of the spectral lines. The measurement scheme and the current status of the experimental setup will be presented. [1] Herbig, G. H., Annu. Rev. Astron. Astrophys. 33, 19-73 (1995). [2] Campbell, E. K. et al., Nature 523, 322-323 (2015)