A Comment on “The Tests of Relativistic Time Dilation in the CERN Muon Storage Ring”

1996 ◽  
Vol 9 (2) ◽  
pp. 340-341
Author(s):  
Young‐Sea Huang
2003 ◽  
Vol 146/147 (1-4) ◽  
pp. 71-75 ◽  
Author(s):  
G. Saathoff ◽  
U. Eisenbarth ◽  
S. Hannemann ◽  
I. Hoog ◽  
G. Huber ◽  
...  

2021 ◽  
Vol 154 (11) ◽  
pp. 111107
Author(s):  
Hazem Daoud ◽  
R. J. Dwayne Miller

2018 ◽  
Vol 09 (03) ◽  
pp. 500-523
Author(s):  
Dirk J. Pons ◽  
Arion D. Pons ◽  
Aiden J. Pons

2011 ◽  
Vol 89 (1) ◽  
pp. 85-93 ◽  
Author(s):  
B. Botermann ◽  
C. Novotny ◽  
D. Bing ◽  
C. Geppert ◽  
G. Gwinner ◽  
...  

We present preparatory measurements for an improved test of time dilation at the experimental storage ring (ESR) at GSI in Darmstadt. A unique combination of particle accelerator experiments and laser spectroscopy is used to perform this test with the highest precision. 7Li+ ions are accelerated to 34% of the speed of light at the GSI Helmholtzzentrum für Schwerionenforschung and stored in the experimental storage ring. The forward and backward Doppler shifts of an electric dipole transition of these ions are measured with laser spectroscopy techniques. From these Doppler shifts, both the ion velocity β = ν/c and the time dilation factor [Formula: see text] can be derived for testing Special Relativity. Two laser systems have been developed to drive the 3S1→3P2 transition in 7Li+. Moreover, a detector system composed of photomultipliers, both to monitor the exact laser ion beam overlap as well as to optimize fluorescence detection, has been set up and tested. We investigate optical-optical double-resonance spectroscopy on a closed Λ-type three-level system to overcome Doppler broadening. A residual, broadened fluorescence background caused by velocity-changing processes in the ion beam is identified, and a background subtraction scheme implemented. At the present stage the experimental sensitivity, although already comparable with previous measurements on slower ion beams at the TSR storage ring that led to [Formula: see text] < 8.4 × 10–8, suffer from a poor signal-to-noise ratio. Modifications of the ion source as well as the detection system are discussed that promise to improve the sensitivity by one order of magnitude.


2005 ◽  
Vol 83 (4) ◽  
pp. 425-434 ◽  
Author(s):  
G Saathoff ◽  
S Reinhardt ◽  
H Buhr ◽  
L A Carlson ◽  
D Schwalm ◽  
...  

The laser-spectroscopic frequency measurement of Doppler-shifted optical lines in the forward and backward directions of a fast ion beam permits a sensitive test of the relativistic Doppler formula and, hence, the relativistic time-dilation factor γSR = 1/[Formula: see text]. An experiment on 7Li+, stored at a velocity of v = 0.065c in the Heidelberg heavy-ion storage ring TSR, has confirmed time dilation with unprecedented accuracy limiting deviations to below 2.2 × 10–7. Ongoing improvements on the experimental setup will further tighten this limit.PACS Nos.: 03.30.+p, 06.30.Ft, and 42.62.Fi


2007 ◽  
Vol 3 (12) ◽  
pp. 861-864 ◽  
Author(s):  
Sascha Reinhardt ◽  
Guido Saathoff ◽  
Henrik Buhr ◽  
Lars A. Carlson ◽  
Andreas Wolf ◽  
...  

KronoScope ◽  
2006 ◽  
Vol 6 (2) ◽  
pp. 175-191
Author(s):  
Ben Wright McGee

AbstractThe Theory of Relativity, in both the Special and General cases, possesses profound inferences concerning the nature of time as a physical component of universal structure, and not as either an abstract concept or a universal entropic progression as is commonly perceived. While the time-slowing observations of what is known as Relativistic "time dilation" are well documented, the temporal interpretations of such dilation effects were critically affected by a Newtonian view of universally invariant time. Consequently, the most sophisticated interpretations of time dilation were parasitically molded by archaic views of physical time and have remained essentially unchallenged for a century, inhibiting any attempts to functionally integrate the observations of Relativity with Newtonian Mechanics. By freeing relativistic observations from the limited paradigm of Newtonian temporal concepts, an alternative, robust interpretation of Special Relativity, one acting in concert with the actions of bodies as described by Newtonian Mechanics, is produced and discussed.


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