Hannover 2013 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 18: Precision spectroscopy of atoms and ions IV (with Q)
A 18.5: Vortrag
Dienstag, 19. März 2013, 15:15–15:30, B 305
First imaging of cold ion clouds in SpecTrap - ion dynamics in the Penning trap — •Stefan Schmidt1,2,3, Tobias Murböck2,4, Zoran Andelkovic2, Manuel Vogel2,4, Alexander Martin2,4, Volker Hannen6, Jonas Vollbrecht6, Christian Weinheimer6, Gerhard Birkl4, Richard Thompson5, and Wilfried Nörtershäuser1,2,3 — 1Institut für Kernphysik, TU Darmstadt — 2GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt — 3Institut für Kernchemie, Johannes Gutenberg Universität Mainz — 4Institut für Angewandte Physik, TU Darmstadt — 5Imperial College London, South Kensington Campus London — 6Institut für Kernphysik, Westfälische Wilhelms-Universität Münster
Heavy Highly Charged Ions (HCI) are particularly promising candidates for high precision experiments. This includes precision spectroscopy of dipole-forbidden transitions in HCIs at low energies, which will serve as a novel test of strong-field quantum electrodynamics with an accuracy of the order of 10−7.
This talk will present the current status of the SpecTrap apparatus, designed to produce a cold and dense sample of low-Z ions, HCIs and their combination. Recently, we confined singly charged Mg+ ions in the trap and performed laser cooling inside the Penning trap. By means of optical and electronic detection methods the properties of the ion cloud such as storage time and temperature were further investigated. In future, the laser cooled ion cloud will serve as an ideal tool for sympathetic cooling of HCIs.