Hannover 2003 – wissenschaftliches Programm
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A: Atomphysik
A 1: Hochauflösende Spektroskopie 1
A 1.4: Vortrag
Montag, 24. März 2003, 11:45–12:00, F342
HFS in hydrogen- and lithium-like simple atomic systems — •Marco Tomaselli1, Lon-chang Liu2, Savely Karshenboim3, Stephan Fritzsche4, Thomas Kühl1, Wilfried Nörtershäuser1, Guido Ewald1, Rodolfo Sanchez1, and Agnieszka Gluzicka1 — 1GSI-Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germay — 2T-Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA — 3D.I. Mendeleev Institute for Metrology (VNIIM), St.Petersburg 198005, Russia and Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany — 4Institute of Physics, Kassel University, D-34132 Kassel, Germany
Systematic model calculations are performed for the magnetization distributions and the HFS in atomic and ionic states of helium and lithium in order to test the interplay of nuclear and atomic structure [1]. The results will contribute to the analysis of high-precision measurements of isotope shifts (IS) in lithium, which is currently underway at GSI and Isolde, CERN [2]. These measurements, in combination with accurate theoretical evaluations of the mass-shift contribution in the respective transition will yield the root-mean-square (rms) nuclear charge radii of unstable Li isotopes, particularly for the halo nucleus 11Li. A hyperfine anomaly could modify the field shift contributions between the different isotopes, thus casting new light on the (IS) theory. Ab initio calculations for the magnetic structures of 3He and 4He are also presented, which might initiate future experiments.
[1] M. Tomaselli et al., Can. J. Phys. 80, 1347 (2002).
[2] A. Dax et al., CERN/INTC 2000-006 INTC/P118.