Dresden 2011 – scientific programme

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A: Fachverband Atomphysik

A 26: Poster III

A 26.43: Poster

Thursday, March 17, 2011, 16:00–18:30, P2

A cryogenic Paul Trap for highly charged ions — •Maria Schwarz, Franziska R. Brunner, and José Crespo López-Urrutia — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

An electron beam ion trap (EBIT) is an effective tool for spectroscopy of highly charged ions (HCIs). However, the deep trapping potential leads to high temperatures of the stored ions, and limits the final resolution. A new linear cryogenic Paul-Trap experiment (CryPTEx) in-line with an EBIT will provide long storage times for HCIs due to the extremely low background pressure in a 4K enclosure. The device will use sympathetic cooling of the trapped HCIs with laser-cooled singly charged ions to resolve the natural line width of forbidden transitions. In addition, addressing individual ions should eventually become possible, since these arrange themselves in stable Coulomb crystals.