Laser cooling of externally produced Mg ions in a Penning trap for sympathetic cooling of highly charged ions

Abstract

We have performed laser cooling of Mg ions confined in a Penning trap. The externally produced ions were captured in flight, stored and laser cooled. Laser-induced fluorescence was observed perpendicular to the cooling laser axis. Optical detection down to the single ion level together with electronic detection of the ion oscillations inside the Penning trap have been used to acquire information on the ion storage time, ion number and ion temperature. Evidence for formation of ion crystals has been observed. These investigations are an important prerequisite for sympathetic cooling of simultaneously stored highly-charged ions and precision laser spectroscopy of forbidden transitions in these.

10 pages, 11 figures, 2 tables

References in corpus (3)

• HITRAP: A facility at GSI for highly charged ions
• Frequency Metrology on single trapped ions in the weak binding limit: The 3s1/2-3p3/2 transition in 24-Mg+
• Electronic detection of charged particle effects in a Penning trap

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