Hannover 2013 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Poster: Precision spectroscopy of atoms and ions (with Q)
A 20.12: Poster
Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof
A cryogenic Paul trap for highly charged ions — •Maria Schwarz1,2, Oscar O. Versolato1, Alexander Windberger1, Lisa Schmöger1, Sita Eberle1, Piet O. Schmidt2, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — 2Quest, Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig
A linear cryogenic Paul trap experiment (CryPTEx) has been set up in-line with an electron beam ion trap. It will provide long storage times for highly charged ions (HCIs) due to the extremely low background pressure within a 4 K enclosure. First experiments on the storage of HCIs in this trap are presently under way. Since HCIs generally do not allow for direct laser cooling, one needs to apply sympathetic cooling. The trapped HCIs will be coupled by Coulomb-interaction to a low-temperature bath of laser-cooled ions what ultimately should allow to resolve the natural linewidth of forbidden transitions. Our final goal is the application of quantum logic spectroscopy, where a singly charged ion species (Be+) is responsible for the sympathetic cooling and state detection of the HCI. For the purpose of these high precision measurements, a second cryogenic Paul trap is currently being designed at MPIK in collaboration with the PTB. The design of this trap is based on CryPTEx but will focus on extremely precise and stable trapping conditions.