https://doi.org/10.1140/epjd/e2002-00216-x
High-precision mass measurements of hydrogen-like 24Mg11+ and 26Mg11+ ions in a Penning trap
On the need of precise mass values of hydrogen-like ions in g factor measurements of bound electrons
1
Manne Siegbahn Laboratory (MSL), Frescativ gen 24,
Stockholm University, 104 05 Stockholm, Sweden
2
Gesellschaft für Schwerionenforschung (GSI) Darmstadt,
Planckstraße 1, 64291 Darmstadt, Germany
3
Atomic
Physics, Fysikum, SCFAB, Stockholm University,
106 91 Stockholm, Sweden
Corresponding authors: a Bergstrom@msi.se - b klaus.blaum@cern.ch
Received:
9
April
2002
Revised:
26
August
2002
Published online:
29
October
2002
For the determination of the bound-electron g factor
in hydrogen-like heavy ions the mass of the ion is needed at a
relative uncertainty of at least 1 ppb. With the
SMILETRAP Penning trap mass spectrometer at the Manne
Siegbahn Laboratory in Stockholm several mass measurements of ions
with even-even nuclei at this level of precision have been
performed so far, exploiting the fact that the mass precision
increases linearly with the ion charge. Measurements of masses of
the hydrogen-like ions of the two Mg-isotopes 24Mg and
26Mg are reported. The masses of the hydrogen-like ions are
u and 
u,
corresponding to the atomic masses 
u and
u, respectively. The possibility to use
these two isotopes for the first observation of an isotope effect
in the bound-electron g factor in hydrogen-like heavy ions is
discussed.
PACS: 07.75.+h – Mass spectrometers / 21.10.Dr – Binding energies and masses / 31.30.Jv – Relativistic and quantum electrodynamic effects in atoms and molecules / 32.10.Bi – Atomic masses, mass spectra, abundances, and isotopes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
