Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 30: Precision spectroscopy of atoms and ions (with Q)
A 30.20: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Stopping of highly charged ions in laser-cooled Be+ Coulomb crystals — •Lisa Schmöger1,2, Maria Schwarz1,2, Thomas M. Baumann1, Oscar O. Versolato1,2, Baptist Piest1, Thomas Pfeifer1, Joachim Ullrich2, Piet O. Schmidt2,3, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Physikalisch-Technische Bundesanstalt, QUEST, Braunschweig, Germany — 3Leibniz Universität Hannover, Germany
Cold highly charged ions (HCIs) are promising candidates for the development of novel ultra-precise clocks and the search for possible variations of fundamental constants. However, in the laboratory HCIs are produced by energetic processes, such as electron impact ionization, leaving the trapped ensemble at translational temperatures on the order of MK. We demonstrate a versatile preparation technique for cold HCIs which are nearly at rest in space. It is based on the generic modular combination of a pulsed HCI source with a cryogenic linear Paul trap [1]. A beamline for deceleration and precooling connects both instruments. Slow HCIs, specifically Ar13+ ions, are injected into the linear Paul trap where they are forced to perform an oscillatory motion along the trap axis. Finally, the HCIs are stopped by damping this motion through multiple interactions with a prestored and continuously laser-cooled Be+ Coulomb crystal.
L. Schmöger, et al., Rev. Sci. Instrum. 86, 103111 (2015)