Physics – Atomic Physics
Scientific paper
2011-04-22
Eur.Phys.J.D57:27-32,2010
Physics
Atomic Physics
6 pages, 7 figures, accepted by European Physical Journal D
Scientific paper
10.1140/epjd/e2010-00016-9
A Lamb-shift polarimeter, which has been built for a fast determination of the polarization of protons and deuterons of an atomic-beam source and which is frequently used in the ANKE experiment at COSY-J\"ulich, is shown to be an excellent device for atomic-spectroscopy measurements of metastable hydrogen isotopes. It is demonstrated that magnetic and electric dipole transitions in hydrogen can be measured as a function of the external magnetic field, giving access to the full Breit-Rabi diagram for the $2^2S_{1/2}$ and the $2^2P_{1/2}$ states. This will allow the study of hyperfine structure, $g$ factors and the classical Lamb shift. Although the data are not yet competitive with state-of-the-art measurements, the potential of the method is enormous, including a possible application to anti-hydrogen spectroscopy.
Engels R.
Grigoryev K.
Mikirtytchiants M.
Rathmann Frank
Schieck Paetz H. gen.
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