Dresden 2011 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 4: Precision spectroscopy of atoms and ions I
A 4.3: Vortrag
Montag, 14. März 2011, 14:30–14:45, BAR 205
Ion trapping and laser cooling in the SPECTRAP experiment — •Zoran Andjelkovic1,3, Shailen Bharadia2, Radu Cazan1,3, Richard Thompson2, Manuel Vogel1, and Wilfried Nörtershäuser1,3 — 1Gesselschaft für Schwerionenforschung, Darmstadt, Germany — 2Imperial College, London, UK — 3Universität Mainz, Germany
As one of the experiments associated to the HITRAP project at GSI, Darmstadt, the SPECTRAP experiment is making its first steps towards precision spectroscopy on trapped highly charged ions. As an initial test, Mg+ ions are produced externally and guided into the trap, located inside a split-coil superconducting magnet, with radial optical ports for fluorescence detection. Using a frequency-quadrupled 1118 nm fibre laser they can be laser cooled to a few mK and used for sympathetic cooling of any other ion species simultaneously trapped. This report presents the trapping technique and the methods used for detecting, cooling and manipulating the ions inside the trap, together with the first experimental results.