2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 15, 41-44 (2002)
DOI: 10.1140/epja/i2001-10217-9

The measurement of the electronic g-factor in hydrogen-like ions -A promising tool for determining fundamental and nuclear constants

T. Beier1, H. Häffner2, N. Hermanspahn2, S. Djekic2, H.-J. Kluge1, W. Quint1, S. Stahl2, T. Valenzuela2, J. Verdú2 and G. Werth2

1  GSI, Atomic Physics, Planckstr. 1, 64291 Darmstadt, Germany
2  Institut für Physik, Universität Mainz, 55099 Mainz, Germany

t.beier@gsi.de

(Received: 21 March 2002 / Published online: 31 October 2002)

Abstract
We describe a double-Penning-trap experiment suitable for testing QED in strong fields by determining the electronic g-factor of a single hydrogen-like ion in its ground state. Our measurements on $^{12}\mbox{C}^{5+}$ reach a relative accuracy of $2 \times 10^{-9}$, where the largest uncertainty results from the mass of the electron. Together with equally precise theoretical predictions therefore, it is possible to evaluate a new value for the electron's mass. The possibilities to obtain other fundamental constants and nuclear parameters are lined out.

PACS
32.10.Fn - Fine and hyperfine structure.
12.20.-m - Quantum electrodynamics.
31.30.Jv - Relativistic and quantum electrodynamic effects in atoms and molecules.
06.20.Jr - Determination of fundamental constants.

© Società Italiana di Fisica, Springer-Verlag 2002