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Title of Journal: Hyperfine Interact

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Abbravation: Hyperfine Interactions

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Springer Netherlands

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DOI

10.1007/bf01423953

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ISSN

1572-9540

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Experimental test of special relativity by laser s

Authors: C Novotny B Bernhardt G Ewald C Geppert G Gwinner T W Hänsch R Holzwarth G Huber S Karpuk HJ Kluge T Kühl W Nörtershäuser S Reinhardt G Saathoff D Schwalm T Udem A Wolf
Publish Date: 2007/01/25
Volume: 171, Issue: 1-3, Pages: 57-67
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Abstract

The Dopplerfree laserspectroscopic frequency measurement of Dopplershifted optical lines in forward and backward direction of a fast ion beam permits a sensitive test of the relativistic Dopplerformula and hence the relativistic time dilation factor gamma SR = left 1 nu 2 mathordleft/ vphantom nu 2 c2 right c2 right 1 mathordleft/ vphantom 1 2 right 2 An experiment on metastable 7Li+ stored at a velocity of v = 0064c in the Heidelberg heavyion storage ring TSR has confirmed time dilation with unprecedented accuracy Latest tests at two different ionvelocities v = 003c and v = 0064c 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 v = 033c which promises an improvement of the sensitivity to deviations from γ SR by an order of magnitude A first test at the ESR has shown the feasibility for this kind of experiment

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