Browsing by Author "Rogozev, Boris I."

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Citation Count: 45
A Mossbauer experiment in a rotating system on the second-order Doppler shift: confirmation of the corrected result by Kundig
(Iop Publishing Ltd, 2009) Yarman, Nuh Tolga; Yarman, Tolga; Missevitch, Oleg V.; Rogozev, Boris I.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We present the results of a Mossbauer experiment in a rotating system, whose performance was stimulated by our recent findings (2008 Phys. Scr. 77 035302) and which consisted of the fact that a correct processing of Kundig's experimental data on the subject gives an appreciable deviation of a relative energy shift Delta E/E between emission and absorption resonant lines from the standard prediction based on the relativistic dilation of time (that is, Delta E/E = -v(2)/2c(2) to the accuracy c(-2), where v is the tangential velocity of the absorber of resonant radiation, and c is the velocity of light in vacuum). That is, the Kundig result we have corrected becomes Delta E/E = -k(v(2)/c(2)), with k = 0.596 +/- 0.006 (instead of the result k = 0.5003 +/- 0.006, originally reported by Kundig). In our own experiment, we carried out measurements for two absorbers with a substantially different isomer shift, which allowed us to make a correction of the Mossbauer data regarding vibrations in the rotor system at various rotational frequencies. As a result, we obtained the overall estimation k = 0.68 +/- 0.03.
Citation Count: 28
Mossbauer experiments in a rotating system on the time dilation effect
(Academic Journals, 2011) Yarman, Nuh Tolga; Yarman, Tolga; Missevitch, Oleg V.; Rogozev, Boris I.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this contribution, we analyze both the old Mossbauer experiments in a rotating system and our new experiment on this subject, which unambiguously indicate the presence of an additional component in the relative energy shift Delta E/E between emission and absorption lines, as compared with the classic relativistic expression written to the accuracy c(-2) (that is Delta E/E=-u(2)/2c(2), where u is the tangential velocity of absorber, and c the light velocity in vacuum). The additional dilation of time for the rotating absorber constitutes more than 20% from the relativistic value, and it many times exceeds the measuring uncertainty. We discuss a possible origin of this effect and the ways of its further experimental verification.