Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 7: Highly charged ions and their applications
A 7.3: Vortrag
Montag, 29. Februar 2016, 15:15–15:30, f107
A compact 0.74 T room-temperature electron beam ion trap — •Peter Micke1,2, Sven Bernitt1,3, James Harries4, Ioanna Arapoglou1,5, Klaus Blaum1, Lisa F. Buchauer1, Thore M. Bücking1, Alexander Egl1,5, Sandro Kraemer1,5, Steffen Kühn1,5, Thomas Pfeifer1, Thomas Stöhlker3, Sven Sturm1, Robert Wolf1, Piet O. Schmidt2,6, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Physikalisch-Technische Bundesanstalt, QUEST, Braunschweig — 3Friedrich-Schiller-Universität Jena — 4SPring-8, Hyogo, Japan — 5Ruprecht-Karls-Universität Heidelberg — 6Leibniz Universität Hannover
Research on highly charged ions (HCI) is of great interest for atomic physics, and electron beam ion traps (EBIT) have proven to be indispensable tools for their production and study. In an EBIT, an electron beam, compressed by a strong, inhomogeneous magnetic field, is used to breed and trap HCIs. We have built a room-temperature EBIT based on permanent magnets, allowing low-maintenance operation. It can provide a continuous beam of Xe ions up to charge state 29+, and a total ion current of 100 pA, with a 4 mA 2 keV electron beam. Pulsed extraction of Ar ions up to charge state 16+ was demonstrated. The protoype currently serves as a HCI source for ALPHATRAP, a device dedicated to high-precision g-factor determinations. Three more EBITs are under construction to provide HCIs for quantum logic spectroscopy, XUV spectroscopy as well as X-ray laser spectroscopy at synchrotrons.