Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 20: Poster Session I

A 20.41: Poster

Dienstag, 7. März 2017, 17:00–19:00, P OG1

ARTEMIS: A Penning trap experiment for measurements of the electron magnetic moment in highly-charged ions via double-resonance spectroscopy — •Zhexi Guo^1,2, Marco Wiesel^1,3, Mohammad Sadegh Ebrahimi^1,4, Wolfgang Quint^1,4, Gerhard Birkl³, and Manuel Vogel¹ — ¹GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — ²Max-Planck-Institut für Kernphysik, Heidelberg, Germany — ³Institut für Angewandte Physik, TU Darmstadt, Darmstadt, Germany — ⁴Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany

The ARTEMIS experiment at GSI Darmstadt currently aims to precisely measure the electron magnetic moment of Ar¹³⁺ ions using laser and microwave spectroscopy within a 7 T magnetic field at pressures down to 10^-14 mbar. In the first of two Penning traps, we have been able to produce ion charge-states up to Ar¹⁶⁺ via electron impact ionisation and achieve storage times of more than three days. With the stored waveform inverse Fourier transform technique, we can attain a high relative concentration of Ar¹³⁺ before transportation to a second Penning trap dedicated to storing the ions for spectroscopy. These measurements are projected to be performed on much heavier ions, such as Bi⁸²⁺, extracted from the HITRAP facility at GSI eventually. Results herein would enable fine assessments of the theoretical propositions of bound-state QED.