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Electron Magnetic Moment in Highly Charged Ions: The ARTEMIS Experiment
Author(s) -
Vogel Manuel,
Ebrahimi Mohammad Sadegh,
Guo Zhexi,
Khodaparast Anahita,
Birkl Gerhard,
Quint Wolfgang
Publication year - 2019
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201800211
Subject(s) - electron magnetic dipole moment , physics , atomic physics , magnetic moment , ion , electron , spin magnetic moment , nuclear magnetic moment , moment (physics) , neutron magnetic moment , spin (aerodynamics) , proton magnetic moment , highly charged ion , magnetic dipole , condensed matter physics , quantum mechanics , magnetic field , spin polarization , thermodynamics , ion source
The magnetic moment ( g ‐factor) of the electron is a fundamental quantity in physics that can be measured with high accuracy by spectroscopy in Penning traps. Its value has been predicted by theory, both for the case of the free (unbound) electron and for the electron bound in a highly charged ion. Precision measurements of the electron magnetic moment yield a stringent test of these predictions and can in turn be used for a determination of fundamental constants such as the fine structure constant or the atomic mass of the electron. For the bound‐electron magnetic‐moment measurement, two complementary approaches exist, one via the so‐called “continuous Stern–Gerlach effect”, applied to ions with zero‐spin nuclei, and one a spectroscopic approach, applied to ions with nonzero nuclear spin. Here, the latter approach is detailed, and an overview of the experiment and its status is given.