3 research outputs found
Toward high-precision values of the self energy of non-S states in hydrogen and hydrogen-like ions
The method and status of a study to provide numerical, high-precision values
of the self-energy level shift in hydrogen and hydrogen-like ions is described.
Graphs of the self energy in hydrogen-like ions with nuclear charge number
between 20 and 110 are given for a large number of states. The self-energy is
the largest contribution of Quantum Electrodynamics (QED) to the energy levels
of these atomic systems. These results greatly expand the number of levels for
which the self energy is known with a controlled and high precision.
Applications include the adjustment of the Rydberg constant and atomic
calculations that take into account QED effects.Comment: Minor changes since previous versio
Mass Measurements and the Bound--Electron g Factor
The accurate determination of atomic masses and the high-precision
measurement of the bound-electron g factor are prerequisites for the
determination of the electron mass, which is one of the fundamental constants
of nature. In the 2002 CODATA adjustment [P. J. Mohr and B. N. Taylor, Rev.
Mod. Phys. 77, 1 (2005)], the values of the electron mass and the
electron-proton mass ratio are mainly based on g factor measurements in
combination with atomic mass measurements. In this paper, we briefly discuss
the prospects for obtaining other fundamental information from bound-electron g
factor measurements, we present some details of a recent investigation of
two-loop binding corrections to the g factor, and we also investigate the
radiative corrections in the limit of highly excited Rydberg S states with a
long lifetime, where the g factor might be explored using a double resonance
experiment.Comment: 13 pages, LaTeX; dedicated to Prof. H.-J. Kluge on the occasion of
his 65th birthday, to appear in Int. J. Mass. Spectrometr