title: Improved test of time dilation in special relativity.
abstract: An improved test of time dilation in special relativity has been performed using laser spectroscopy on fast ions at the heavy-ion storage-ring TSR in Heidelberg. The Doppler-shifted frequencies of a two-level transition in 7Li+ ions at v=0.064c have been measured in the forward and backward direction to an accuracy of Deltanu/nu=1 x 10(-9) using collinear saturation spectroscopy. The result confirms the relativistic Doppler formula and sets a new limit of 2.2 x 10(-7) for deviations from the time dilation factor gamma(SR)=(1-v2/c2)(-1/2).
authors: Max-Planck-Institut für Kernphysik, 69029 Heidelberg, Germany.
authors: G
authors: G
authors: Saathoff
authors: S
authors: S
authors: Karpuk
authors: U
authors: U
authors: Eisenbarth
authors: G
authors: G
authors: Huber
authors: S
authors: S
authors: Krohn
authors: R
authors: R
authors: Muñoz Horta
authors: S
authors: S
authors: Reinhardt
authors: D
authors: D
authors: Schwalm
authors: A
authors: A
authors: Wolf
authors: G
authors: G
authors: Gwinner