Test of Time Dilation Using Stored Li+ Ions as Clocks at Relativistic Speed
Abstract
We present the concluding result from an Ives-Stilwell-type time dilation experiment using 7Li+ ions confined at a velocity of beta = v/c = 0.338 in the storage ring ESR at Darmstadt. A Lambda-type three-level system within the hyperfine structure of the 7Li+ triplet S1-P2 line is driven by two laser beams aligned parallel and antiparallel relative to the ion beam. The lasers' Doppler shifted frequencies required for resonance are measured with an accuracy of < 4 ppb using optical-optical double resonance spectroscopy. This allows us to verify the Special Relativity relation between the time dilation factor gamma and the velocity beta to within 2.3 ppb at this velocity. The result, which is singled out by a high boost velocity beta, is also interpreted within Lorentz Invariance violating test theories.
Keywords
Cite
@article{arxiv.1409.7951,
title = {Test of Time Dilation Using Stored Li+ Ions as Clocks at Relativistic Speed},
author = {Benjamin Botermann and Dennis Bing and Christopher Geppert and Gerald Gwinner and Theodor W. Hänsch and Gerhard Huber and Sergei Karpuk and Andreas Krieger and Thomas Kühl and Wilfried Nörtershäuser and Christian Novotny and Sascha Reinhardt and Rodolfo Sánchez and Dirk Schwalm and Thomas Stöhlker and Andreas Wolf and Guido Saathoff},
journal= {arXiv preprint arXiv:1409.7951},
year = {2014}
}