Abstract The Doppler-free laser-spectroscopic frequency measurement of Doppler-shifted optical lines in forward and backward direction of a fast ion beam permits a sensitive test of the relativistic Doppler-formula and, hence, the relativistic time dilation factor γ SR=(1−ν 2/c 2)−1/2. An experiment on metastable 7Li+, stored at a velocity of ν=0.064c in the Heidelberg heavy-ion storage ring TSR, has confirmed time dilation with unprecedented accuracy. Latest tests at two different ion-velocities (ν=0.03c and ν=0.064c) will enhance these measurements. An improved version of this experiment will be carried out at the experimental storage ring (ESR) at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt. The ESR permits 7Li+ to be stored at ν=0.33c which promises an improvement of the sensitivity to deviations from γ SRby an order of magnitude. A first test at the ESR has shown the feasibility for this kind of experiment.
Experimental test of special relativity by laser spectroscopy
LASER 2006 ; 57-67
2007-01-01
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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